/*
 * jQuery JavaScript Library v1.3.2
 * http://jquery.com/
 *
 * Copyright (c) 2009 John Resig
 * Dual licensed under the MIT and GPL licenses.
 * http://docs.jquery.com/License
 *
 * Date: 2009-02-19 17:34:21 -0500 (Thu, 19 Feb 2009)
 * Revision: 6246
 */
(function(){var l=this,g,y=l.jQuery,p=l.$,o=l.jQuery=l.$=function(E,F){return new o.fn.init(E,F)},D=/^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,f=/^.[^:#\[\.,]*$/;o.fn=o.prototype={init:function(E,H){E=E||document;if(E.nodeType){this[0]=E;this.length=1;this.context=E;return this}if(typeof E==="string"){var G=D.exec(E);if(G&&(G[1]||!H)){if(G[1]){E=o.clean([G[1]],H)}else{var I=document.getElementById(G[3]);if(I&&I.id!=G[3]){return o().find(E)}var F=o(I||[]);F.context=document;F.selector=E;return F}}else{return o(H).find(E)}}else{if(o.isFunction(E)){return o(document).ready(E)}}if(E.selector&&E.context){this.selector=E.selector;this.context=E.context}return this.setArray(o.isArray(E)?E:o.makeArray(E))},selector:"",jquery:"1.3.2",size:function(){return this.length},get:function(E){return E===g?Array.prototype.slice.call(this):this[E]},pushStack:function(F,H,E){var G=o(F);G.prevObject=this;G.context=this.context;if(H==="find"){G.selector=this.selector+(this.selector?" ":"")+E}else{if(H){G.selector=this.selector+"."+H+"("+E+")"}}return G},setArray:function(E){this.length=0;Array.prototype.push.apply(this,E);return this},each:function(F,E){return o.each(this,F,E)},index:function(E){return o.inArray(E&&E.jquery?E[0]:E,this)},attr:function(F,H,G){var E=F;if(typeof F==="string"){if(H===g){return this[0]&&o[G||"attr"](this[0],F)}else{E={};E[F]=H}}return this.each(function(I){for(F in E){o.attr(G?this.style:this,F,o.prop(this,E[F],G,I,F))}})},css:function(E,F){if((E=="width"||E=="height")&&parseFloat(F)<0){F=g}return this.attr(E,F,"curCSS")},text:function(F){if(typeof F!=="object"&&F!=null){return this.empty().append((this[0]&&this[0].ownerDocument||document).createTextNode(F))}var E="";o.each(F||this,function(){o.each(this.childNodes,function(){if(this.nodeType!=8){E+=this.nodeType!=1?this.nodeValue:o.fn.text([this])}})});return E},wrapAll:function(E){if(this[0]){var F=o(E,this[0].ownerDocument).clone();if(this[0].parentNode){F.insertBefore(this[0])}F.map(function(){var G=this;while(G.firstChild){G=G.firstChild}return G}).append(this)}return this},wrapInner:function(E){return this.each(function(){o(this).contents().wrapAll(E)})},wrap:function(E){return this.each(function(){o(this).wrapAll(E)})},append:function(){return this.domManip(arguments,true,function(E){if(this.nodeType==1){this.appendChild(E)}})},prepend:function(){return this.domManip(arguments,true,function(E){if(this.nodeType==1){this.insertBefore(E,this.firstChild)}})},before:function(){return this.domManip(arguments,false,function(E){this.parentNode.insertBefore(E,this)})},after:function(){return this.domManip(arguments,false,function(E){this.parentNode.insertBefore(E,this.nextSibling)})},end:function(){return this.prevObject||o([])},push:[].push,sort:[].sort,splice:[].splice,find:function(E){if(this.length===1){var F=this.pushStack([],"find",E);F.length=0;o.find(E,this[0],F);return F}else{return this.pushStack(o.unique(o.map(this,function(G){return o.find(E,G)})),"find",E)}},clone:function(G){var E=this.map(function(){if(!o.support.noCloneEvent&&!o.isXMLDoc(this)){var I=this.outerHTML;if(!I){var J=this.ownerDocument.createElement("div");J.appendChild(this.cloneNode(true));I=J.innerHTML}return o.clean([I.replace(/ jQuery\d+="(?:\d+|null)"/g,"").replace(/^\s*/,"")])[0]}else{return this.cloneNode(true)}});if(G===true){var H=this.find("*").andSelf(),F=0;E.find("*").andSelf().each(function(){if(this.nodeName!==H[F].nodeName){return}var I=o.data(H[F],"events");for(var K in I){for(var J in I[K]){o.event.add(this,K,I[K][J],I[K][J].data)}}F++})}return E},filter:function(E){return this.pushStack(o.isFunction(E)&&o.grep(this,function(G,F){return E.call(G,F)})||o.multiFilter(E,o.grep(this,function(F){return F.nodeType===1})),"filter",E)},closest:function(E){var G=o.expr.match.POS.test(E)?o(E):null,F=0;return this.map(function(){var H=this;while(H&&H.ownerDocument){if(G?G.index(H)>-1:o(H).is(E)){o.data(H,"closest",F);return H}H=H.parentNode;F++}})},not:function(E){if(typeof E==="string"){if(f.test(E)){return this.pushStack(o.multiFilter(E,this,true),"not",E)}else{E=o.multiFilter(E,this)}}var F=E.length&&E[E.length-1]!==g&&!E.nodeType;return this.filter(function(){return F?o.inArray(this,E)<0:this!=E})},add:function(E){return this.pushStack(o.unique(o.merge(this.get(),typeof E==="string"?o(E):o.makeArray(E))))},is:function(E){return !!E&&o.multiFilter(E,this).length>0},hasClass:function(E){return !!E&&this.is("."+E)},val:function(K){if(K===g){var E=this[0];if(E){if(o.nodeName(E,"option")){return(E.attributes.value||{}).specified?E.value:E.text}if(o.nodeName(E,"select")){var I=E.selectedIndex,L=[],M=E.options,H=E.type=="select-one";if(I<0){return null}for(var F=H?I:0,J=H?I+1:M.length;F<J;F++){var G=M[F];if(G.selected){K=o(G).val();if(H){return K}L.push(K)}}return L}return(E.value||"").replace(/\r/g,"")}return g}if(typeof K==="number"){K+=""}return this.each(function(){if(this.nodeType!=1){return}if(o.isArray(K)&&/radio|checkbox/.test(this.type)){this.checked=(o.inArray(this.value,K)>=0||o.inArray(this.name,K)>=0)}else{if(o.nodeName(this,"select")){var N=o.makeArray(K);o("option",this).each(function(){this.selected=(o.inArray(this.value,N)>=0||o.inArray(this.text,N)>=0)});if(!N.length){this.selectedIndex=-1}}else{this.value=K}}})},html:function(E){return E===g?(this[0]?this[0].innerHTML.replace(/ jQuery\d+="(?:\d+|null)"/g,""):null):this.empty().append(E)},replaceWith:function(E){return this.after(E).remove()},eq:function(E){return this.slice(E,+E+1)},slice:function(){return this.pushStack(Array.prototype.slice.apply(this,arguments),"slice",Array.prototype.slice.call(arguments).join(","))},map:function(E){return this.pushStack(o.map(this,function(G,F){return E.call(G,F,G)}))},andSelf:function(){return this.add(this.prevObject)},domManip:function(J,M,L){if(this[0]){var I=(this[0].ownerDocument||this[0]).createDocumentFragment(),F=o.clean(J,(this[0].ownerDocument||this[0]),I),H=I.firstChild;if(H){for(var G=0,E=this.length;G<E;G++){L.call(K(this[G],H),this.length>1||G>0?I.cloneNode(true):I)}}if(F){o.each(F,z)}}return this;function K(N,O){return M&&o.nodeName(N,"table")&&o.nodeName(O,"tr")?(N.getElementsByTagName("tbody")[0]||N.appendChild(N.ownerDocument.createElement("tbody"))):N}}};o.fn.init.prototype=o.fn;function z(E,F){if(F.src){o.ajax({url:F.src,async:false,dataType:"script"})}else{o.globalEval(F.text||F.textContent||F.innerHTML||"")}if(F.parentNode){F.parentNode.removeChild(F)}}function e(){return +new Date}o.extend=o.fn.extend=function(){var J=arguments[0]||{},H=1,I=arguments.length,E=false,G;if(typeof J==="boolean"){E=J;J=arguments[1]||{};H=2}if(typeof J!=="object"&&!o.isFunction(J)){J={}}if(I==H){J=this;--H}for(;H<I;H++){if((G=arguments[H])!=null){for(var F in G){var K=J[F],L=G[F];if(J===L){continue}if(E&&L&&typeof L==="object"&&!L.nodeType){J[F]=o.extend(E,K||(L.length!=null?[]:{}),L)}else{if(L!==g){J[F]=L}}}}}return J};var b=/z-?index|font-?weight|opacity|zoom|line-?height/i,q=document.defaultView||{},s=Object.prototype.toString;o.extend({noConflict:function(E){l.$=p;if(E){l.jQuery=y}return o},isFunction:function(E){return s.call(E)==="[object Function]"},isArray:function(E){return s.call(E)==="[object Array]"},isXMLDoc:function(E){return E.nodeType===9&&E.documentElement.nodeName!=="HTML"||!!E.ownerDocument&&o.isXMLDoc(E.ownerDocument)},globalEval:function(G){if(G&&/\S/.test(G)){var F=document.getElementsByTagName("head")[0]||document.documentElement,E=document.createElement("script");E.type="text/javascript";if(o.support.scriptEval){E.appendChild(document.createTextNode(G))}else{E.text=G}F.insertBefore(E,F.firstChild);F.removeChild(E)}},nodeName:function(F,E){return F.nodeName&&F.nodeName.toUpperCase()==E.toUpperCase()},each:function(G,K,F){var E,H=0,I=G.length;if(F){if(I===g){for(E in G){if(K.apply(G[E],F)===false){break}}}else{for(;H<I;){if(K.apply(G[H++],F)===false){break}}}}else{if(I===g){for(E in G){if(K.call(G[E],E,G[E])===false){break}}}else{for(var J=G[0];H<I&&K.call(J,H,J)!==false;J=G[++H]){}}}return G},prop:function(H,I,G,F,E){if(o.isFunction(I)){I=I.call(H,F)}return typeof I==="number"&&G=="curCSS"&&!b.test(E)?I+"px":I},className:{add:function(E,F){o.each((F||"").split(/\s+/),function(G,H){if(E.nodeType==1&&!o.className.has(E.className,H)){E.className+=(E.className?" ":"")+H}})},remove:function(E,F){if(E.nodeType==1){E.className=F!==g?o.grep(E.className.split(/\s+/),function(G){return !o.className.has(F,G)}).join(" "):""}},has:function(F,E){return F&&o.inArray(E,(F.className||F).toString().split(/\s+/))>-1}},swap:function(H,G,I){var E={};for(var F in G){E[F]=H.style[F];H.style[F]=G[F]}I.call(H);for(var F in G){H.style[F]=E[F]}},css:function(H,F,J,E){if(F=="width"||F=="height"){var L,G={position:"absolute",visibility:"hidden",display:"block"},K=F=="width"?["Left","Right"]:["Top","Bottom"];function I(){L=F=="width"?H.offsetWidth:H.offsetHeight;if(E==="border"){return}o.each(K,function(){if(!E){L-=parseFloat(o.curCSS(H,"padding"+this,true))||0}if(E==="margin"){L+=parseFloat(o.curCSS(H,"margin"+this,true))||0}else{L-=parseFloat(o.curCSS(H,"border"+this+"Width",true))||0}})}if(H.offsetWidth!==0){I()}else{o.swap(H,G,I)}return Math.max(0,Math.round(L))}return o.curCSS(H,F,J)},curCSS:function(I,F,G){var L,E=I.style;if(F=="opacity"&&!o.support.opacity){L=o.attr(E,"opacity");return L==""?"1":L}if(F.match(/float/i)){F=w}if(!G&&E&&E[F]){L=E[F]}else{if(q.getComputedStyle){if(F.match(/float/i)){F="float"}F=F.replace(/([A-Z])/g,"-$1").toLowerCase();var M=q.getComputedStyle(I,null);if(M){L=M.getPropertyValue(F)}if(F=="opacity"&&L==""){L="1"}}else{if(I.currentStyle){var J=F.replace(/\-(\w)/g,function(N,O){return O.toUpperCase()});L=I.currentStyle[F]||I.currentStyle[J];if(!/^\d+(px)?$/i.test(L)&&/^\d/.test(L)){var H=E.left,K=I.runtimeStyle.left;I.runtimeStyle.left=I.currentStyle.left;E.left=L||0;L=E.pixelLeft+"px";E.left=H;I.runtimeStyle.left=K}}}}return L},clean:function(F,K,I){K=K||document;if(typeof K.createElement==="undefined"){K=K.ownerDocument||K[0]&&K[0].ownerDocument||document}if(!I&&F.length===1&&typeof F[0]==="string"){var H=/^<(\w+)\s*\/?>$/.exec(F[0]);if(H){return[K.createElement(H[1])]}}var G=[],E=[],L=K.createElement("div");o.each(F,function(P,S){if(typeof S==="number"){S+=""}if(!S){return}if(typeof S==="string"){S=S.replace(/(<(\w+)[^>]*?)\/>/g,function(U,V,T){return T.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i)?U:V+"></"+T+">"});var O=S.replace(/^\s+/,"").substring(0,10).toLowerCase();var Q=!O.indexOf("<opt")&&[1,"<select multiple='multiple'>","</select>"]||!O.indexOf("<leg")&&[1,"<fieldset>","</fieldset>"]||O.match(/^<(thead|tbody|tfoot|colg|cap)/)&&[1,"<table>","</table>"]||!O.indexOf("<tr")&&[2,"<table><tbody>","</tbody></table>"]||(!O.indexOf("<td")||!O.indexOf("<th"))&&[3,"<table><tbody><tr>","</tr></tbody></table>"]||!O.indexOf("<col")&&[2,"<table><tbody></tbody><colgroup>","</colgroup></table>"]||!o.support.htmlSerialize&&[1,"div<div>","</div>"]||[0,"",""];L.innerHTML=Q[1]+S+Q[2];while(Q[0]--){L=L.lastChild}if(!o.support.tbody){var R=/<tbody/i.test(S),N=!O.indexOf("<table")&&!R?L.firstChild&&L.firstChild.childNodes:Q[1]=="<table>"&&!R?L.childNodes:[];for(var M=N.length-1;M>=0;--M){if(o.nodeName(N[M],"tbody")&&!N[M].childNodes.length){N[M].parentNode.removeChild(N[M])}}}if(!o.support.leadingWhitespace&&/^\s/.test(S)){L.insertBefore(K.createTextNode(S.match(/^\s*/)[0]),L.firstChild)}S=o.makeArray(L.childNodes)}if(S.nodeType){G.push(S)}else{G=o.merge(G,S)}});if(I){for(var J=0;G[J];J++){if(o.nodeName(G[J],"script")&&(!G[J].type||G[J].type.toLowerCase()==="text/javascript")){E.push(G[J].parentNode?G[J].parentNode.removeChild(G[J]):G[J])}else{if(G[J].nodeType===1){G.splice.apply(G,[J+1,0].concat(o.makeArray(G[J].getElementsByTagName("script"))))}I.appendChild(G[J])}}return E}return G},attr:function(J,G,K){if(!J||J.nodeType==3||J.nodeType==8){return g}var H=!o.isXMLDoc(J),L=K!==g;G=H&&o.props[G]||G;if(J.tagName){var F=/href|src|style/.test(G);if(G=="selected"&&J.parentNode){J.parentNode.selectedIndex}if(G in J&&H&&!F){if(L){if(G=="type"&&o.nodeName(J,"input")&&J.parentNode){throw"type property can't be changed"}J[G]=K}if(o.nodeName(J,"form")&&J.getAttributeNode(G)){return J.getAttributeNode(G).nodeValue}if(G=="tabIndex"){var I=J.getAttributeNode("tabIndex");return I&&I.specified?I.value:J.nodeName.match(/(button|input|object|select|textarea)/i)?0:J.nodeName.match(/^(a|area)$/i)&&J.href?0:g}return J[G]}if(!o.support.style&&H&&G=="style"){return o.attr(J.style,"cssText",K)}if(L){J.setAttribute(G,""+K)}var E=!o.support.hrefNormalized&&H&&F?J.getAttribute(G,2):J.getAttribute(G);return E===null?g:E}if(!o.support.opacity&&G=="opacity"){if(L){J.zoom=1;J.filter=(J.filter||"").replace(/alpha\([^)]*\)/,"")+(parseInt(K)+""=="NaN"?"":"alpha(opacity="+K*100+")")}return J.filter&&J.filter.indexOf("opacity=")>=0?(parseFloat(J.filter.match(/opacity=([^)]*)/)[1])/100)+"":""}G=G.replace(/-([a-z])/ig,function(M,N){return N.toUpperCase()});if(L){J[G]=K}return J[G]},trim:function(E){return(E||"").replace(/^\s+|\s+$/g,"")},makeArray:function(G){var E=[];if(G!=null){var F=G.length;if(F==null||typeof G==="string"||o.isFunction(G)||G.setInterval){E[0]=G}else{while(F){E[--F]=G[F]}}}return E},inArray:function(G,H){for(var E=0,F=H.length;E<F;E++){if(H[E]===G){return E}}return -1},merge:function(H,E){var F=0,G,I=H.length;if(!o.support.getAll){while((G=E[F++])!=null){if(G.nodeType!=8){H[I++]=G}}}else{while((G=E[F++])!=null){H[I++]=G}}return H},unique:function(K){var F=[],E={};try{for(var G=0,H=K.length;G<H;G++){var J=o.data(K[G]);if(!E[J]){E[J]=true;F.push(K[G])}}}catch(I){F=K}return F},grep:function(F,J,E){var G=[];for(var H=0,I=F.length;H<I;H++){if(!E!=!J(F[H],H)){G.push(F[H])}}return G},map:function(E,J){var F=[];for(var G=0,H=E.length;G<H;G++){var I=J(E[G],G);if(I!=null){F[F.length]=I}}return F.concat.apply([],F)}});var C=navigator.userAgent.toLowerCase();o.browser={version:(C.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/)||[0,"0"])[1],safari:/webkit/.test(C),opera:/opera/.test(C),msie:/msie/.test(C)&&!/opera/.test(C),mozilla:/mozilla/.test(C)&&!/(compatible|webkit)/.test(C)};o.each({parent:function(E){return E.parentNode},parents:function(E){return o.dir(E,"parentNode")},next:function(E){return o.nth(E,2,"nextSibling")},prev:function(E){return o.nth(E,2,"previousSibling")},nextAll:function(E){return o.dir(E,"nextSibling")},prevAll:function(E){return o.dir(E,"previousSibling")},siblings:function(E){return o.sibling(E.parentNode.firstChild,E)},children:function(E){return o.sibling(E.firstChild)},contents:function(E){return o.nodeName(E,"iframe")?E.contentDocument||E.contentWindow.document:o.makeArray(E.childNodes)}},function(E,F){o.fn[E]=function(G){var H=o.map(this,F);if(G&&typeof G=="string"){H=o.multiFilter(G,H)}return this.pushStack(o.unique(H),E,G)}});o.each({appendTo:"append",prependTo:"prepend",insertBefore:"before",insertAfter:"after",replaceAll:"replaceWith"},function(E,F){o.fn[E]=function(G){var J=[],L=o(G);for(var K=0,H=L.length;K<H;K++){var I=(K>0?this.clone(true):this).get();o.fn[F].apply(o(L[K]),I);J=J.concat(I)}return this.pushStack(J,E,G)}});o.each({removeAttr:function(E){o.attr(this,E,"");if(this.nodeType==1){this.removeAttribute(E)}},addClass:function(E){o.className.add(this,E)},removeClass:function(E){o.className.remove(this,E)},toggleClass:function(F,E){if(typeof E!=="boolean"){E=!o.className.has(this,F)}o.className[E?"add":"remove"](this,F)},remove:function(E){if(!E||o.filter(E,[this]).length){o("*",this).add([this]).each(function(){o.event.remove(this);o.removeData(this)});if(this.parentNode){this.parentNode.removeChild(this)}}},empty:function(){o(this).children().remove();while(this.firstChild){this.removeChild(this.firstChild)}}},function(E,F){o.fn[E]=function(){return this.each(F,arguments)}});function j(E,F){return E[0]&&parseInt(o.curCSS(E[0],F,true),10)||0}var h="jQuery"+e(),v=0,A={};o.extend({cache:{},data:function(F,E,G){F=F==l?A:F;var H=F[h];if(!H){H=F[h]=++v}if(E&&!o.cache[H]){o.cache[H]={}}if(G!==g){o.cache[H][E]=G}return E?o.cache[H][E]:H},removeData:function(F,E){F=F==l?A:F;var H=F[h];if(E){if(o.cache[H]){delete o.cache[H][E];E="";for(E in o.cache[H]){break}if(!E){o.removeData(F)}}}else{try{delete F[h]}catch(G){if(F.removeAttribute){F.removeAttribute(h)}}delete o.cache[H]}},queue:function(F,E,H){if(F){E=(E||"fx")+"queue";var G=o.data(F,E);if(!G||o.isArray(H)){G=o.data(F,E,o.makeArray(H))}else{if(H){G.push(H)}}}return G},dequeue:function(H,G){var E=o.queue(H,G),F=E.shift();if(!G||G==="fx"){F=E[0]}if(F!==g){F.call(H)}}});o.fn.extend({data:function(E,G){var H=E.split(".");H[1]=H[1]?"."+H[1]:"";if(G===g){var F=this.triggerHandler("getData"+H[1]+"!",[H[0]]);if(F===g&&this.length){F=o.data(this[0],E)}return F===g&&H[1]?this.data(H[0]):F}else{return this.trigger("setData"+H[1]+"!",[H[0],G]).each(function(){o.data(this,E,G)})}},removeData:function(E){return this.each(function(){o.removeData(this,E)})},queue:function(E,F){if(typeof E!=="string"){F=E;E="fx"}if(F===g){return o.queue(this[0],E)}return this.each(function(){var G=o.queue(this,E,F);if(E=="fx"&&G.length==1){G[0].call(this)}})},dequeue:function(E){return this.each(function(){o.dequeue(this,E)})}});
/*
 * Sizzle CSS Selector Engine - v0.9.3
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 */
(function(){var R=/((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?/g,L=0,H=Object.prototype.toString;var F=function(Y,U,ab,ac){ab=ab||[];U=U||document;if(U.nodeType!==1&&U.nodeType!==9){return[]}if(!Y||typeof Y!=="string"){return ab}var Z=[],W,af,ai,T,ad,V,X=true;R.lastIndex=0;while((W=R.exec(Y))!==null){Z.push(W[1]);if(W[2]){V=RegExp.rightContext;break}}if(Z.length>1&&M.exec(Y)){if(Z.length===2&&I.relative[Z[0]]){af=J(Z[0]+Z[1],U)}else{af=I.relative[Z[0]]?[U]:F(Z.shift(),U);while(Z.length){Y=Z.shift();if(I.relative[Y]){Y+=Z.shift()}af=J(Y,af)}}}else{var ae=ac?{expr:Z.pop(),set:E(ac)}:F.find(Z.pop(),Z.length===1&&U.parentNode?U.parentNode:U,Q(U));af=F.filter(ae.expr,ae.set);if(Z.length>0){ai=E(af)}else{X=false}while(Z.length){var ah=Z.pop(),ag=ah;if(!I.relative[ah]){ah=""}else{ag=Z.pop()}if(ag==null){ag=U}I.relative[ah](ai,ag,Q(U))}}if(!ai){ai=af}if(!ai){throw"Syntax error, unrecognized expression: "+(ah||Y)}if(H.call(ai)==="[object Array]"){if(!X){ab.push.apply(ab,ai)}else{if(U.nodeType===1){for(var aa=0;ai[aa]!=null;aa++){if(ai[aa]&&(ai[aa]===true||ai[aa].nodeType===1&&K(U,ai[aa]))){ab.push(af[aa])}}}else{for(var aa=0;ai[aa]!=null;aa++){if(ai[aa]&&ai[aa].nodeType===1){ab.push(af[aa])}}}}}else{E(ai,ab)}if(V){F(V,U,ab,ac);if(G){hasDuplicate=false;ab.sort(G);if(hasDuplicate){for(var aa=1;aa<ab.length;aa++){if(ab[aa]===ab[aa-1]){ab.splice(aa--,1)}}}}}return ab};F.matches=function(T,U){return F(T,null,null,U)};F.find=function(aa,T,ab){var Z,X;if(!aa){return[]}for(var W=0,V=I.order.length;W<V;W++){var Y=I.order[W],X;if((X=I.match[Y].exec(aa))){var U=RegExp.leftContext;if(U.substr(U.length-1)!=="\\"){X[1]=(X[1]||"").replace(/\\/g,"");Z=I.find[Y](X,T,ab);if(Z!=null){aa=aa.replace(I.match[Y],"");break}}}}if(!Z){Z=T.getElementsByTagName("*")}return{set:Z,expr:aa}};F.filter=function(ad,ac,ag,W){var V=ad,ai=[],aa=ac,Y,T,Z=ac&&ac[0]&&Q(ac[0]);while(ad&&ac.length){for(var ab in I.filter){if((Y=I.match[ab].exec(ad))!=null){var U=I.filter[ab],ah,af;T=false;if(aa==ai){ai=[]}if(I.preFilter[ab]){Y=I.preFilter[ab](Y,aa,ag,ai,W,Z);if(!Y){T=ah=true}else{if(Y===true){continue}}}if(Y){for(var X=0;(af=aa[X])!=null;X++){if(af){ah=U(af,Y,X,aa);var ae=W^!!ah;if(ag&&ah!=null){if(ae){T=true}else{aa[X]=false}}else{if(ae){ai.push(af);T=true}}}}}if(ah!==g){if(!ag){aa=ai}ad=ad.replace(I.match[ab],"");if(!T){return[]}break}}}if(ad==V){if(T==null){throw"Syntax error, unrecognized expression: "+ad}else{break}}V=ad}return aa};var I=F.selectors={order:["ID","NAME","TAG"],match:{ID:/#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,CLASS:/\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,NAME:/\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,ATTR:/\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,TAG:/^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,CHILD:/:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,POS:/:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,PSEUDO:/:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/},attrMap:{"class":"className","for":"htmlFor"},attrHandle:{href:function(T){return T.getAttribute("href")}},relative:{"+":function(aa,T,Z){var X=typeof T==="string",ab=X&&!/\W/.test(T),Y=X&&!ab;if(ab&&!Z){T=T.toUpperCase()}for(var W=0,V=aa.length,U;W<V;W++){if((U=aa[W])){while((U=U.previousSibling)&&U.nodeType!==1){}aa[W]=Y||U&&U.nodeName===T?U||false:U===T}}if(Y){F.filter(T,aa,true)}},">":function(Z,U,aa){var X=typeof U==="string";if(X&&!/\W/.test(U)){U=aa?U:U.toUpperCase();for(var V=0,T=Z.length;V<T;V++){var Y=Z[V];if(Y){var W=Y.parentNode;Z[V]=W.nodeName===U?W:false}}}else{for(var V=0,T=Z.length;V<T;V++){var Y=Z[V];if(Y){Z[V]=X?Y.parentNode:Y.parentNode===U}}if(X){F.filter(U,Z,true)}}},"":function(W,U,Y){var V=L++,T=S;if(!U.match(/\W/)){var X=U=Y?U:U.toUpperCase();T=P}T("parentNode",U,V,W,X,Y)},"~":function(W,U,Y){var V=L++,T=S;if(typeof U==="string"&&!U.match(/\W/)){var X=U=Y?U:U.toUpperCase();T=P}T("previousSibling",U,V,W,X,Y)}},find:{ID:function(U,V,W){if(typeof V.getElementById!=="undefined"&&!W){var T=V.getElementById(U[1]);return T?[T]:[]}},NAME:function(V,Y,Z){if(typeof Y.getElementsByName!=="undefined"){var U=[],X=Y.getElementsByName(V[1]);for(var W=0,T=X.length;W<T;W++){if(X[W].getAttribute("name")===V[1]){U.push(X[W])}}return U.length===0?null:U}},TAG:function(T,U){return U.getElementsByTagName(T[1])}},preFilter:{CLASS:function(W,U,V,T,Z,aa){W=" "+W[1].replace(/\\/g,"")+" ";if(aa){return W}for(var X=0,Y;(Y=U[X])!=null;X++){if(Y){if(Z^(Y.className&&(" "+Y.className+" ").indexOf(W)>=0)){if(!V){T.push(Y)}}else{if(V){U[X]=false}}}}return false},ID:function(T){return T[1].replace(/\\/g,"")},TAG:function(U,T){for(var V=0;T[V]===false;V++){}return T[V]&&Q(T[V])?U[1]:U[1].toUpperCase()},CHILD:function(T){if(T[1]=="nth"){var U=/(-?)(\d*)n((?:\+|-)?\d*)/.exec(T[2]=="even"&&"2n"||T[2]=="odd"&&"2n+1"||!/\D/.test(T[2])&&"0n+"+T[2]||T[2]);T[2]=(U[1]+(U[2]||1))-0;T[3]=U[3]-0}T[0]=L++;return T},ATTR:function(X,U,V,T,Y,Z){var W=X[1].replace(/\\/g,"");if(!Z&&I.attrMap[W]){X[1]=I.attrMap[W]}if(X[2]==="~="){X[4]=" "+X[4]+" "}return X},PSEUDO:function(X,U,V,T,Y){if(X[1]==="not"){if(X[3].match(R).length>1||/^\w/.test(X[3])){X[3]=F(X[3],null,null,U)}else{var W=F.filter(X[3],U,V,true^Y);if(!V){T.push.apply(T,W)}return false}}else{if(I.match.POS.test(X[0])||I.match.CHILD.test(X[0])){return true}}return X},POS:function(T){T.unshift(true);return T}},filters:{enabled:function(T){return T.disabled===false&&T.type!=="hidden"},disabled:function(T){return T.disabled===true},checked:function(T){return T.checked===true},selected:function(T){T.parentNode.selectedIndex;return T.selected===true},parent:function(T){return !!T.firstChild},empty:function(T){return !T.firstChild},has:function(V,U,T){return !!F(T[3],V).length},header:function(T){return/h\d/i.test(T.nodeName)},text:function(T){return"text"===T.type},radio:function(T){return"radio"===T.type},checkbox:function(T){return"checkbox"===T.type},file:function(T){return"file"===T.type},password:function(T){return"password"===T.type},submit:function(T){return"submit"===T.type},image:function(T){return"image"===T.type},reset:function(T){return"reset"===T.type},button:function(T){return"button"===T.type||T.nodeName.toUpperCase()==="BUTTON"},input:function(T){return/input|select|textarea|button/i.test(T.nodeName)}},setFilters:{first:function(U,T){return T===0},last:function(V,U,T,W){return U===W.length-1},even:function(U,T){return T%2===0},odd:function(U,T){return T%2===1},lt:function(V,U,T){return U<T[3]-0},gt:function(V,U,T){return U>T[3]-0},nth:function(V,U,T){return T[3]-0==U},eq:function(V,U,T){return T[3]-0==U}},filter:{PSEUDO:function(Z,V,W,aa){var U=V[1],X=I.filters[U];if(X){return X(Z,W,V,aa)}else{if(U==="contains"){return(Z.textContent||Z.innerText||"").indexOf(V[3])>=0}else{if(U==="not"){var Y=V[3];for(var W=0,T=Y.length;W<T;W++){if(Y[W]===Z){return false}}return true}}}},CHILD:function(T,W){var Z=W[1],U=T;switch(Z){case"only":case"first":while(U=U.previousSibling){if(U.nodeType===1){return false}}if(Z=="first"){return true}U=T;case"last":while(U=U.nextSibling){if(U.nodeType===1){return false}}return true;case"nth":var V=W[2],ac=W[3];if(V==1&&ac==0){return true}var Y=W[0],ab=T.parentNode;if(ab&&(ab.sizcache!==Y||!T.nodeIndex)){var X=0;for(U=ab.firstChild;U;U=U.nextSibling){if(U.nodeType===1){U.nodeIndex=++X}}ab.sizcache=Y}var aa=T.nodeIndex-ac;if(V==0){return aa==0}else{return(aa%V==0&&aa/V>=0)}}},ID:function(U,T){return U.nodeType===1&&U.getAttribute("id")===T},TAG:function(U,T){return(T==="*"&&U.nodeType===1)||U.nodeName===T},CLASS:function(U,T){return(" "+(U.className||U.getAttribute("class"))+" ").indexOf(T)>-1},ATTR:function(Y,W){var V=W[1],T=I.attrHandle[V]?I.attrHandle[V](Y):Y[V]!=null?Y[V]:Y.getAttribute(V),Z=T+"",X=W[2],U=W[4];return T==null?X==="!=":X==="="?Z===U:X==="*="?Z.indexOf(U)>=0:X==="~="?(" "+Z+" ").indexOf(U)>=0:!U?Z&&T!==false:X==="!="?Z!=U:X==="^="?Z.indexOf(U)===0:X==="$="?Z.substr(Z.length-U.length)===U:X==="|="?Z===U||Z.substr(0,U.length+1)===U+"-":false},POS:function(X,U,V,Y){var T=U[2],W=I.setFilters[T];if(W){return W(X,V,U,Y)}}}};var M=I.match.POS;for(var O in I.match){I.match[O]=RegExp(I.match[O].source+/(?![^\[]*\])(?![^\(]*\))/.source)}var E=function(U,T){U=Array.prototype.slice.call(U);if(T){T.push.apply(T,U);return T}return U};try{Array.prototype.slice.call(document.documentElement.childNodes)}catch(N){E=function(X,W){var U=W||[];if(H.call(X)==="[object Array]"){Array.prototype.push.apply(U,X)}else{if(typeof X.length==="number"){for(var V=0,T=X.length;V<T;V++){U.push(X[V])}}else{for(var V=0;X[V];V++){U.push(X[V])}}}return U}}var G;if(document.documentElement.compareDocumentPosition){G=function(U,T){var V=U.compareDocumentPosition(T)&4?-1:U===T?0:1;if(V===0){hasDuplicate=true}return V}}else{if("sourceIndex" in document.documentElement){G=function(U,T){var V=U.sourceIndex-T.sourceIndex;if(V===0){hasDuplicate=true}return V}}else{if(document.createRange){G=function(W,U){var V=W.ownerDocument.createRange(),T=U.ownerDocument.createRange();V.selectNode(W);V.collapse(true);T.selectNode(U);T.collapse(true);var X=V.compareBoundaryPoints(Range.START_TO_END,T);if(X===0){hasDuplicate=true}return X}}}}(function(){var U=document.createElement("form"),V="script"+(new Date).getTime();U.innerHTML="<input name='"+V+"'/>";var T=document.documentElement;T.insertBefore(U,T.firstChild);if(!!document.getElementById(V)){I.find.ID=function(X,Y,Z){if(typeof Y.getElementById!=="undefined"&&!Z){var W=Y.getElementById(X[1]);return W?W.id===X[1]||typeof W.getAttributeNode!=="undefined"&&W.getAttributeNode("id").nodeValue===X[1]?[W]:g:[]}};I.filter.ID=function(Y,W){var X=typeof Y.getAttributeNode!=="undefined"&&Y.getAttributeNode("id");return Y.nodeType===1&&X&&X.nodeValue===W}}T.removeChild(U)})();(function(){var T=document.createElement("div");T.appendChild(document.createComment(""));if(T.getElementsByTagName("*").length>0){I.find.TAG=function(U,Y){var X=Y.getElementsByTagName(U[1]);if(U[1]==="*"){var W=[];for(var V=0;X[V];V++){if(X[V].nodeType===1){W.push(X[V])}}X=W}return X}}T.innerHTML="<a href='#'></a>";if(T.firstChild&&typeof T.firstChild.getAttribute!=="undefined"&&T.firstChild.getAttribute("href")!=="#"){I.attrHandle.href=function(U){return U.getAttribute("href",2)}}})();if(document.querySelectorAll){(function(){var T=F,U=document.createElement("div");U.innerHTML="<p class='TEST'></p>";if(U.querySelectorAll&&U.querySelectorAll(".TEST").length===0){return}F=function(Y,X,V,W){X=X||document;if(!W&&X.nodeType===9&&!Q(X)){try{return E(X.querySelectorAll(Y),V)}catch(Z){}}return T(Y,X,V,W)};F.find=T.find;F.filter=T.filter;F.selectors=T.selectors;F.matches=T.matches})()}if(document.getElementsByClassName&&document.documentElement.getElementsByClassName){(function(){var T=document.createElement("div");T.innerHTML="<div class='test e'></div><div class='test'></div>";if(T.getElementsByClassName("e").length===0){return}T.lastChild.className="e";if(T.getElementsByClassName("e").length===1){return}I.order.splice(1,0,"CLASS");I.find.CLASS=function(U,V,W){if(typeof V.getElementsByClassName!=="undefined"&&!W){return V.getElementsByClassName(U[1])}}})()}function P(U,Z,Y,ad,aa,ac){var ab=U=="previousSibling"&&!ac;for(var W=0,V=ad.length;W<V;W++){var T=ad[W];if(T){if(ab&&T.nodeType===1){T.sizcache=Y;T.sizset=W}T=T[U];var X=false;while(T){if(T.sizcache===Y){X=ad[T.sizset];break}if(T.nodeType===1&&!ac){T.sizcache=Y;T.sizset=W}if(T.nodeName===Z){X=T;break}T=T[U]}ad[W]=X}}}function S(U,Z,Y,ad,aa,ac){var ab=U=="previousSibling"&&!ac;for(var W=0,V=ad.length;W<V;W++){var T=ad[W];if(T){if(ab&&T.nodeType===1){T.sizcache=Y;T.sizset=W}T=T[U];var X=false;while(T){if(T.sizcache===Y){X=ad[T.sizset];break}if(T.nodeType===1){if(!ac){T.sizcache=Y;T.sizset=W}if(typeof Z!=="string"){if(T===Z){X=true;break}}else{if(F.filter(Z,[T]).length>0){X=T;break}}}T=T[U]}ad[W]=X}}}var K=document.compareDocumentPosition?function(U,T){return U.compareDocumentPosition(T)&16}:function(U,T){return U!==T&&(U.contains?U.contains(T):true)};var Q=function(T){return T.nodeType===9&&T.documentElement.nodeName!=="HTML"||!!T.ownerDocument&&Q(T.ownerDocument)};var J=function(T,aa){var W=[],X="",Y,V=aa.nodeType?[aa]:aa;while((Y=I.match.PSEUDO.exec(T))){X+=Y[0];T=T.replace(I.match.PSEUDO,"")}T=I.relative[T]?T+"*":T;for(var Z=0,U=V.length;Z<U;Z++){F(T,V[Z],W)}return F.filter(X,W)};o.find=F;o.filter=F.filter;o.expr=F.selectors;o.expr[":"]=o.expr.filters;F.selectors.filters.hidden=function(T){return T.offsetWidth===0||T.offsetHeight===0};F.selectors.filters.visible=function(T){return T.offsetWidth>0||T.offsetHeight>0};F.selectors.filters.animated=function(T){return o.grep(o.timers,function(U){return T===U.elem}).length};o.multiFilter=function(V,T,U){if(U){V=":not("+V+")"}return F.matches(V,T)};o.dir=function(V,U){var T=[],W=V[U];while(W&&W!=document){if(W.nodeType==1){T.push(W)}W=W[U]}return T};o.nth=function(X,T,V,W){T=T||1;var U=0;for(;X;X=X[V]){if(X.nodeType==1&&++U==T){break}}return X};o.sibling=function(V,U){var T=[];for(;V;V=V.nextSibling){if(V.nodeType==1&&V!=U){T.push(V)}}return T};return;l.Sizzle=F})();o.event={add:function(I,F,H,K){if(I.nodeType==3||I.nodeType==8){return}if(I.setInterval&&I!=l){I=l}if(!H.guid){H.guid=this.guid++}if(K!==g){var G=H;H=this.proxy(G);H.data=K}var E=o.data(I,"events")||o.data(I,"events",{}),J=o.data(I,"handle")||o.data(I,"handle",function(){return typeof o!=="undefined"&&!o.event.triggered?o.event.handle.apply(arguments.callee.elem,arguments):g});J.elem=I;o.each(F.split(/\s+/),function(M,N){var O=N.split(".");N=O.shift();H.type=O.slice().sort().join(".");var L=E[N];if(o.event.specialAll[N]){o.event.specialAll[N].setup.call(I,K,O)}if(!L){L=E[N]={};if(!o.event.special[N]||o.event.special[N].setup.call(I,K,O)===false){if(I.addEventListener){I.addEventListener(N,J,false)}else{if(I.attachEvent){I.attachEvent("on"+N,J)}}}}L[H.guid]=H;o.event.global[N]=true});I=null},guid:1,global:{},remove:function(K,H,J){if(K.nodeType==3||K.nodeType==8){return}var G=o.data(K,"events"),F,E;if(G){if(H===g||(typeof H==="string"&&H.charAt(0)==".")){for(var I in G){this.remove(K,I+(H||""))}}else{if(H.type){J=H.handler;H=H.type}o.each(H.split(/\s+/),function(M,O){var Q=O.split(".");O=Q.shift();var N=RegExp("(^|\\.)"+Q.slice().sort().join(".*\\.")+"(\\.|$)");if(G[O]){if(J){delete G[O][J.guid]}else{for(var P in G[O]){if(N.test(G[O][P].type)){delete G[O][P]}}}if(o.event.specialAll[O]){o.event.specialAll[O].teardown.call(K,Q)}for(F in G[O]){break}if(!F){if(!o.event.special[O]||o.event.special[O].teardown.call(K,Q)===false){if(K.removeEventListener){K.removeEventListener(O,o.data(K,"handle"),false)}else{if(K.detachEvent){K.detachEvent("on"+O,o.data(K,"handle"))}}}F=null;delete G[O]}}})}for(F in G){break}if(!F){var L=o.data(K,"handle");if(L){L.elem=null}o.removeData(K,"events");o.removeData(K,"handle")}}},trigger:function(I,K,H,E){var G=I.type||I;if(!E){I=typeof I==="object"?I[h]?I:o.extend(o.Event(G),I):o.Event(G);if(G.indexOf("!")>=0){I.type=G=G.slice(0,-1);I.exclusive=true}if(!H){I.stopPropagation();if(this.global[G]){o.each(o.cache,function(){if(this.events&&this.events[G]){o.event.trigger(I,K,this.handle.elem)}})}}if(!H||H.nodeType==3||H.nodeType==8){return g}I.result=g;I.target=H;K=o.makeArray(K);K.unshift(I)}I.currentTarget=H;var J=o.data(H,"handle");if(J){J.apply(H,K)}if((!H[G]||(o.nodeName(H,"a")&&G=="click"))&&H["on"+G]&&H["on"+G].apply(H,K)===false){I.result=false}if(!E&&H[G]&&!I.isDefaultPrevented()&&!(o.nodeName(H,"a")&&G=="click")){this.triggered=true;try{H[G]()}catch(L){}}this.triggered=false;if(!I.isPropagationStopped()){var F=H.parentNode||H.ownerDocument;if(F){o.event.trigger(I,K,F,true)}}},handle:function(K){var J,E;K=arguments[0]=o.event.fix(K||l.event);K.currentTarget=this;var L=K.type.split(".");K.type=L.shift();J=!L.length&&!K.exclusive;var I=RegExp("(^|\\.)"+L.slice().sort().join(".*\\.")+"(\\.|$)");E=(o.data(this,"events")||{})[K.type];for(var G in E){var H=E[G];if(J||I.test(H.type)){K.handler=H;K.data=H.data;var F=H.apply(this,arguments);if(F!==g){K.result=F;if(F===false){K.preventDefault();K.stopPropagation()}}if(K.isImmediatePropagationStopped()){break}}}},props:"altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode metaKey newValue originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "),fix:function(H){if(H[h]){return H}var F=H;H=o.Event(F);for(var G=this.props.length,J;G;){J=this.props[--G];H[J]=F[J]}if(!H.target){H.target=H.srcElement||document}if(H.target.nodeType==3){H.target=H.target.parentNode}if(!H.relatedTarget&&H.fromElement){H.relatedTarget=H.fromElement==H.target?H.toElement:H.fromElement}if(H.pageX==null&&H.clientX!=null){var I=document.documentElement,E=document.body;H.pageX=H.clientX+(I&&I.scrollLeft||E&&E.scrollLeft||0)-(I.clientLeft||0);H.pageY=H.clientY+(I&&I.scrollTop||E&&E.scrollTop||0)-(I.clientTop||0)}if(!H.which&&((H.charCode||H.charCode===0)?H.charCode:H.keyCode)){H.which=H.charCode||H.keyCode}if(!H.metaKey&&H.ctrlKey){H.metaKey=H.ctrlKey}if(!H.which&&H.button){H.which=(H.button&1?1:(H.button&2?3:(H.button&4?2:0)))}return H},proxy:function(F,E){E=E||function(){return F.apply(this,arguments)};E.guid=F.guid=F.guid||E.guid||this.guid++;return E},special:{ready:{setup:B,teardown:function(){}}},specialAll:{live:{setup:function(E,F){o.event.add(this,F[0],c)},teardown:function(G){if(G.length){var E=0,F=RegExp("(^|\\.)"+G[0]+"(\\.|$)");o.each((o.data(this,"events").live||{}),function(){if(F.test(this.type)){E++}});if(E<1){o.event.remove(this,G[0],c)}}}}}};o.Event=function(E){if(!this.preventDefault){return new o.Event(E)}if(E&&E.type){this.originalEvent=E;this.type=E.type}else{this.type=E}this.timeStamp=e();this[h]=true};function k(){return false}function u(){return true}o.Event.prototype={preventDefault:function(){this.isDefaultPrevented=u;var E=this.originalEvent;if(!E){return}if(E.preventDefault){E.preventDefault()}E.returnValue=false},stopPropagation:function(){this.isPropagationStopped=u;var E=this.originalEvent;if(!E){return}if(E.stopPropagation){E.stopPropagation()}E.cancelBubble=true},stopImmediatePropagation:function(){this.isImmediatePropagationStopped=u;this.stopPropagation()},isDefaultPrevented:k,isPropagationStopped:k,isImmediatePropagationStopped:k};var a=function(F){var E=F.relatedTarget;while(E&&E!=this){try{E=E.parentNode}catch(G){E=this}}if(E!=this){F.type=F.data;o.event.handle.apply(this,arguments)}};o.each({mouseover:"mouseenter",mouseout:"mouseleave"},function(F,E){o.event.special[E]={setup:function(){o.event.add(this,F,a,E)},teardown:function(){o.event.remove(this,F,a)}}});o.fn.extend({bind:function(F,G,E){return F=="unload"?this.one(F,G,E):this.each(function(){o.event.add(this,F,E||G,E&&G)})},one:function(G,H,F){var E=o.event.proxy(F||H,function(I){o(this).unbind(I,E);return(F||H).apply(this,arguments)});return this.each(function(){o.event.add(this,G,E,F&&H)})},unbind:function(F,E){return this.each(function(){o.event.remove(this,F,E)})},trigger:function(E,F){return this.each(function(){o.event.trigger(E,F,this)})},triggerHandler:function(E,G){if(this[0]){var F=o.Event(E);F.preventDefault();F.stopPropagation();o.event.trigger(F,G,this[0]);return F.result}},toggle:function(G){var E=arguments,F=1;while(F<E.length){o.event.proxy(G,E[F++])}return this.click(o.event.proxy(G,function(H){this.lastToggle=(this.lastToggle||0)%F;H.preventDefault();return E[this.lastToggle++].apply(this,arguments)||false}))},hover:function(E,F){return this.mouseenter(E).mouseleave(F)},ready:function(E){B();if(o.isReady){E.call(document,o)}else{o.readyList.push(E)}return this},live:function(G,F){var E=o.event.proxy(F);E.guid+=this.selector+G;o(document).bind(i(G,this.selector),this.selector,E);return this},die:function(F,E){o(document).unbind(i(F,this.selector),E?{guid:E.guid+this.selector+F}:null);return this}});function c(H){var E=RegExp("(^|\\.)"+H.type+"(\\.|$)"),G=true,F=[];o.each(o.data(this,"events").live||[],function(I,J){if(E.test(J.type)){var K=o(H.target).closest(J.data)[0];if(K){F.push({elem:K,fn:J})}}});F.sort(function(J,I){return o.data(J.elem,"closest")-o.data(I.elem,"closest")});o.each(F,function(){if(this.fn.call(this.elem,H,this.fn.data)===false){return(G=false)}});return G}function i(F,E){return["live",F,E.replace(/\./g,"`").replace(/ /g,"|")].join(".")}o.extend({isReady:false,readyList:[],ready:function(){if(!o.isReady){o.isReady=true;if(o.readyList){o.each(o.readyList,function(){this.call(document,o)});o.readyList=null}o(document).triggerHandler("ready")}}});var x=false;function B(){if(x){return}x=true;if(document.addEventListener){document.addEventListener("DOMContentLoaded",function(){document.removeEventListener("DOMContentLoaded",arguments.callee,false);o.ready()},false)}else{if(document.attachEvent){document.attachEvent("onreadystatechange",function(){if(document.readyState==="complete"){document.detachEvent("onreadystatechange",arguments.callee);o.ready()}});if(document.documentElement.doScroll&&l==l.top){(function(){if(o.isReady){return}try{document.documentElement.doScroll("left")}catch(E){setTimeout(arguments.callee,0);return}o.ready()})()}}}o.event.add(l,"load",o.ready)}o.each(("blur,focus,load,resize,scroll,unload,click,dblclick,mousedown,mouseup,mousemove,mouseover,mouseout,mouseenter,mouseleave,change,select,submit,keydown,keypress,keyup,error").split(","),function(F,E){o.fn[E]=function(G){return G?this.bind(E,G):this.trigger(E)}});o(l).bind("unload",function(){for(var E in o.cache){if(E!=1&&o.cache[E].handle){o.event.remove(o.cache[E].handle.elem)}}});(function(){o.support={};var F=document.documentElement,G=document.createElement("script"),K=document.createElement("div"),J="script"+(new Date).getTime();K.style.display="none";K.innerHTML='   <link/><table></table><a href="/a" style="color:red;float:left;opacity:.5;">a</a><select><option>text</option></select><object><param/></object>';var H=K.getElementsByTagName("*"),E=K.getElementsByTagName("a")[0];if(!H||!H.length||!E){return}o.support={leadingWhitespace:K.firstChild.nodeType==3,tbody:!K.getElementsByTagName("tbody").length,objectAll:!!K.getElementsByTagName("object")[0].getElementsByTagName("*").length,htmlSerialize:!!K.getElementsByTagName("link").length,style:/red/.test(E.getAttribute("style")),hrefNormalized:E.getAttribute("href")==="/a",opacity:E.style.opacity==="0.5",cssFloat:!!E.style.cssFloat,scriptEval:false,noCloneEvent:true,boxModel:null};G.type="text/javascript";try{G.appendChild(document.createTextNode("window."+J+"=1;"))}catch(I){}F.insertBefore(G,F.firstChild);if(l[J]){o.support.scriptEval=true;delete l[J]}F.removeChild(G);if(K.attachEvent&&K.fireEvent){K.attachEvent("onclick",function(){o.support.noCloneEvent=false;K.detachEvent("onclick",arguments.callee)});K.cloneNode(true).fireEvent("onclick")}o(function(){var L=document.createElement("div");L.style.width=L.style.paddingLeft="1px";document.body.appendChild(L);o.boxModel=o.support.boxModel=L.offsetWidth===2;document.body.removeChild(L).style.display="none"})})();var w=o.support.cssFloat?"cssFloat":"styleFloat";o.props={"for":"htmlFor","class":"className","float":w,cssFloat:w,styleFloat:w,readonly:"readOnly",maxlength:"maxLength",cellspacing:"cellSpacing",rowspan:"rowSpan",tabindex:"tabIndex"};o.fn.extend({_load:o.fn.load,load:function(G,J,K){if(typeof G!=="string"){return this._load(G)}var I=G.indexOf(" ");if(I>=0){var E=G.slice(I,G.length);G=G.slice(0,I)}var H="GET";if(J){if(o.isFunction(J)){K=J;J=null}else{if(typeof J==="object"){J=o.param(J);H="POST"}}}var F=this;o.ajax({url:G,type:H,dataType:"html",data:J,complete:function(M,L){if(L=="success"||L=="notmodified"){F.html(E?o("<div/>").append(M.responseText.replace(/<script(.|\s)*?\/script>/g,"")).find(E):M.responseText)}if(K){F.each(K,[M.responseText,L,M])}}});return this},serialize:function(){return o.param(this.serializeArray())},serializeArray:function(){return this.map(function(){return this.elements?o.makeArray(this.elements):this}).filter(function(){return this.name&&!this.disabled&&(this.checked||/select|textarea/i.test(this.nodeName)||/text|hidden|password|search/i.test(this.type))}).map(function(E,F){var G=o(this).val();return G==null?null:o.isArray(G)?o.map(G,function(I,H){return{name:F.name,value:I}}):{name:F.name,value:G}}).get()}});o.each("ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess,ajaxSend".split(","),function(E,F){o.fn[F]=function(G){return this.bind(F,G)}});var r=e();o.extend({get:function(E,G,H,F){if(o.isFunction(G)){H=G;G=null}return o.ajax({type:"GET",url:E,data:G,success:H,dataType:F})},getScript:function(E,F){return o.get(E,null,F,"script")},getJSON:function(E,F,G){return o.get(E,F,G,"json")},post:function(E,G,H,F){if(o.isFunction(G)){H=G;G={}}return o.ajax({type:"POST",url:E,data:G,success:H,dataType:F})},ajaxSetup:function(E){o.extend(o.ajaxSettings,E)},ajaxSettings:{url:location.href,global:true,type:"GET",contentType:"application/x-www-form-urlencoded",processData:true,async:true,xhr:function(){return l.ActiveXObject?new ActiveXObject("Microsoft.XMLHTTP"):new XMLHttpRequest()},accepts:{xml:"application/xml, text/xml",html:"text/html",script:"text/javascript, application/javascript",json:"application/json, text/javascript",text:"text/plain",_default:"*/*"}},lastModified:{},ajax:function(M){M=o.extend(true,M,o.extend(true,{},o.ajaxSettings,M));var W,F=/=\?(&|$)/g,R,V,G=M.type.toUpperCase();if(M.data&&M.processData&&typeof M.data!=="string"){M.data=o.param(M.data)}if(M.dataType=="jsonp"){if(G=="GET"){if(!M.url.match(F)){M.url+=(M.url.match(/\?/)?"&":"?")+(M.jsonp||"callback")+"=?"}}else{if(!M.data||!M.data.match(F)){M.data=(M.data?M.data+"&":"")+(M.jsonp||"callback")+"=?"}}M.dataType="json"}if(M.dataType=="json"&&(M.data&&M.data.match(F)||M.url.match(F))){W="jsonp"+r++;if(M.data){M.data=(M.data+"").replace(F,"="+W+"$1")}M.url=M.url.replace(F,"="+W+"$1");M.dataType="script";l[W]=function(X){V=X;I();L();l[W]=g;try{delete l[W]}catch(Y){}if(H){H.removeChild(T)}}}if(M.dataType=="script"&&M.cache==null){M.cache=false}if(M.cache===false&&G=="GET"){var E=e();var U=M.url.replace(/(\?|&)_=.*?(&|$)/,"$1_="+E+"$2");M.url=U+((U==M.url)?(M.url.match(/\?/)?"&":"?")+"_="+E:"")}if(M.data&&G=="GET"){M.url+=(M.url.match(/\?/)?"&":"?")+M.data;M.data=null}if(M.global&&!o.active++){o.event.trigger("ajaxStart")}var Q=/^(\w+:)?\/\/([^\/?#]+)/.exec(M.url);if(M.dataType=="script"&&G=="GET"&&Q&&(Q[1]&&Q[1]!=location.protocol||Q[2]!=location.host)){var H=document.getElementsByTagName("head")[0];var T=document.createElement("script");T.src=M.url;if(M.scriptCharset){T.charset=M.scriptCharset}if(!W){var O=false;T.onload=T.onreadystatechange=function(){if(!O&&(!this.readyState||this.readyState=="loaded"||this.readyState=="complete")){O=true;I();L();T.onload=T.onreadystatechange=null;H.removeChild(T)}}}H.appendChild(T);return g}var K=false;var J=M.xhr();if(M.username){J.open(G,M.url,M.async,M.username,M.password)}else{J.open(G,M.url,M.async)}try{if(M.data){J.setRequestHeader("Content-Type",M.contentType)}if(M.ifModified){J.setRequestHeader("If-Modified-Since",o.lastModified[M.url]||"Thu, 01 Jan 1970 00:00:00 GMT")}J.setRequestHeader("X-Requested-With","XMLHttpRequest");J.setRequestHeader("Accept",M.dataType&&M.accepts[M.dataType]?M.accepts[M.dataType]+", */*":M.accepts._default)}catch(S){}if(M.beforeSend&&M.beforeSend(J,M)===false){if(M.global&&!--o.active){o.event.trigger("ajaxStop")}J.abort();return false}if(M.global){o.event.trigger("ajaxSend",[J,M])}var N=function(X){if(J.readyState==0){if(P){clearInterval(P);P=null;if(M.global&&!--o.active){o.event.trigger("ajaxStop")}}}else{if(!K&&J&&(J.readyState==4||X=="timeout")){K=true;if(P){clearInterval(P);P=null}R=X=="timeout"?"timeout":!o.httpSuccess(J)?"error":M.ifModified&&o.httpNotModified(J,M.url)?"notmodified":"success";if(R=="success"){try{V=o.httpData(J,M.dataType,M)}catch(Z){R="parsererror"}}if(R=="success"){var Y;try{Y=J.getResponseHeader("Last-Modified")}catch(Z){}if(M.ifModified&&Y){o.lastModified[M.url]=Y}if(!W){I()}}else{o.handleError(M,J,R)}L();if(X){J.abort()}if(M.async){J=null}}}};if(M.async){var P=setInterval(N,13);if(M.timeout>0){setTimeout(function(){if(J&&!K){N("timeout")}},M.timeout)}}try{J.send(M.data)}catch(S){o.handleError(M,J,null,S)}if(!M.async){N()}function I(){if(M.success){M.success(V,R)}if(M.global){o.event.trigger("ajaxSuccess",[J,M])}}function L(){if(M.complete){M.complete(J,R)}if(M.global){o.event.trigger("ajaxComplete",[J,M])}if(M.global&&!--o.active){o.event.trigger("ajaxStop")}}return J},handleError:function(F,H,E,G){if(F.error){F.error(H,E,G)}if(F.global){o.event.trigger("ajaxError",[H,F,G])}},active:0,httpSuccess:function(F){try{return !F.status&&location.protocol=="file:"||(F.status>=200&&F.status<300)||F.status==304||F.status==1223}catch(E){}return false},httpNotModified:function(G,E){try{var H=G.getResponseHeader("Last-Modified");return G.status==304||H==o.lastModified[E]}catch(F){}return false},httpData:function(J,H,G){var F=J.getResponseHeader("content-type"),E=H=="xml"||!H&&F&&F.indexOf("xml")>=0,I=E?J.responseXML:J.responseText;if(E&&I.documentElement.tagName=="parsererror"){throw"parsererror"}if(G&&G.dataFilter){I=G.dataFilter(I,H)}if(typeof I==="string"){if(H=="script"){o.globalEval(I)}if(H=="json"){I=l["eval"]("("+I+")")}}return I},param:function(E){var G=[];function H(I,J){G[G.length]=encodeURIComponent(I)+"="+encodeURIComponent(J)}if(o.isArray(E)||E.jquery){o.each(E,function(){H(this.name,this.value)})}else{for(var F in E){if(o.isArray(E[F])){o.each(E[F],function(){H(F,this)})}else{H(F,o.isFunction(E[F])?E[F]():E[F])}}}return G.join("&").replace(/%20/g,"+")}});var m={},n,d=[["height","marginTop","marginBottom","paddingTop","paddingBottom"],["width","marginLeft","marginRight","paddingLeft","paddingRight"],["opacity"]];function t(F,E){var G={};o.each(d.concat.apply([],d.slice(0,E)),function(){G[this]=F});return G}o.fn.extend({show:function(J,L){if(J){return this.animate(t("show",3),J,L)}else{for(var H=0,F=this.length;H<F;H++){var E=o.data(this[H],"olddisplay");this[H].style.display=E||"";if(o.css(this[H],"display")==="none"){var G=this[H].tagName,K;if(m[G]){K=m[G]}else{var I=o("<"+G+" />").appendTo("body");K=I.css("display");if(K==="none"){K="block"}I.remove();m[G]=K}o.data(this[H],"olddisplay",K)}}for(var H=0,F=this.length;H<F;H++){this[H].style.display=o.data(this[H],"olddisplay")||""}return this}},hide:function(H,I){if(H){return this.animate(t("hide",3),H,I)}else{for(var G=0,F=this.length;G<F;G++){var E=o.data(this[G],"olddisplay");if(!E&&E!=="none"){o.data(this[G],"olddisplay",o.css(this[G],"display"))}}for(var G=0,F=this.length;G<F;G++){this[G].style.display="none"}return this}},_toggle:o.fn.toggle,toggle:function(G,F){var E=typeof G==="boolean";return o.isFunction(G)&&o.isFunction(F)?this._toggle.apply(this,arguments):G==null||E?this.each(function(){var H=E?G:o(this).is(":hidden");o(this)[H?"show":"hide"]()}):this.animate(t("toggle",3),G,F)},fadeTo:function(E,G,F){return this.animate({opacity:G},E,F)},animate:function(I,F,H,G){var E=o.speed(F,H,G);return this[E.queue===false?"each":"queue"](function(){var K=o.extend({},E),M,L=this.nodeType==1&&o(this).is(":hidden"),J=this;for(M in I){if(I[M]=="hide"&&L||I[M]=="show"&&!L){return K.complete.call(this)}if((M=="height"||M=="width")&&this.style){K.display=o.css(this,"display");K.overflow=this.style.overflow}}if(K.overflow!=null){this.style.overflow="hidden"}K.curAnim=o.extend({},I);o.each(I,function(O,S){var R=new o.fx(J,K,O);if(/toggle|show|hide/.test(S)){R[S=="toggle"?L?"show":"hide":S](I)}else{var Q=S.toString().match(/^([+-]=)?([\d+-.]+)(.*)$/),T=R.cur(true)||0;if(Q){var N=parseFloat(Q[2]),P=Q[3]||"px";if(P!="px"){J.style[O]=(N||1)+P;T=((N||1)/R.cur(true))*T;J.style[O]=T+P}if(Q[1]){N=((Q[1]=="-="?-1:1)*N)+T}R.custom(T,N,P)}else{R.custom(T,S,"")}}});return true})},stop:function(F,E){var G=o.timers;if(F){this.queue([])}this.each(function(){for(var H=G.length-1;H>=0;H--){if(G[H].elem==this){if(E){G[H](true)}G.splice(H,1)}}});if(!E){this.dequeue()}return this}});o.each({slideDown:t("show",1),slideUp:t("hide",1),slideToggle:t("toggle",1),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"}},function(E,F){o.fn[E]=function(G,H){return this.animate(F,G,H)}});o.extend({speed:function(G,H,F){var E=typeof G==="object"?G:{complete:F||!F&&H||o.isFunction(G)&&G,duration:G,easing:F&&H||H&&!o.isFunction(H)&&H};E.duration=o.fx.off?0:typeof E.duration==="number"?E.duration:o.fx.speeds[E.duration]||o.fx.speeds._default;E.old=E.complete;E.complete=function(){if(E.queue!==false){o(this).dequeue()}if(o.isFunction(E.old)){E.old.call(this)}};return E},easing:{linear:function(G,H,E,F){return E+F*G},swing:function(G,H,E,F){return((-Math.cos(G*Math.PI)/2)+0.5)*F+E}},timers:[],fx:function(F,E,G){this.options=E;this.elem=F;this.prop=G;if(!E.orig){E.orig={}}}});o.fx.prototype={update:function(){if(this.options.step){this.options.step.call(this.elem,this.now,this)}(o.fx.step[this.prop]||o.fx.step._default)(this);if((this.prop=="height"||this.prop=="width")&&this.elem.style){this.elem.style.display="block"}},cur:function(F){if(this.elem[this.prop]!=null&&(!this.elem.style||this.elem.style[this.prop]==null)){return this.elem[this.prop]}var E=parseFloat(o.css(this.elem,this.prop,F));return E&&E>-10000?E:parseFloat(o.curCSS(this.elem,this.prop))||0},custom:function(I,H,G){this.startTime=e();this.start=I;this.end=H;this.unit=G||this.unit||"px";this.now=this.start;this.pos=this.state=0;var E=this;function F(J){return E.step(J)}F.elem=this.elem;if(F()&&o.timers.push(F)&&!n){n=setInterval(function(){var K=o.timers;for(var J=0;J<K.length;J++){if(!K[J]()){K.splice(J--,1)}}if(!K.length){clearInterval(n);n=g}},13)}},show:function(){this.options.orig[this.prop]=o.attr(this.elem.style,this.prop);this.options.show=true;this.custom(this.prop=="width"||this.prop=="height"?1:0,this.cur());o(this.elem).show()},hide:function(){this.options.orig[this.prop]=o.attr(this.elem.style,this.prop);this.options.hide=true;this.custom(this.cur(),0)},step:function(H){var G=e();if(H||G>=this.options.duration+this.startTime){this.now=this.end;this.pos=this.state=1;this.update();this.options.curAnim[this.prop]=true;var E=true;for(var F in this.options.curAnim){if(this.options.curAnim[F]!==true){E=false}}if(E){if(this.options.display!=null){this.elem.style.overflow=this.options.overflow;this.elem.style.display=this.options.display;if(o.css(this.elem,"display")=="none"){this.elem.style.display="block"}}if(this.options.hide){o(this.elem).hide()}if(this.options.hide||this.options.show){for(var I in this.options.curAnim){o.attr(this.elem.style,I,this.options.orig[I])}}this.options.complete.call(this.elem)}return false}else{var J=G-this.startTime;this.state=J/this.options.duration;this.pos=o.easing[this.options.easing||(o.easing.swing?"swing":"linear")](this.state,J,0,1,this.options.duration);this.now=this.start+((this.end-this.start)*this.pos);this.update()}return true}};o.extend(o.fx,{speeds:{slow:600,fast:200,_default:400},step:{opacity:function(E){o.attr(E.elem.style,"opacity",E.now)},_default:function(E){if(E.elem.style&&E.elem.style[E.prop]!=null){E.elem.style[E.prop]=E.now+E.unit}else{E.elem[E.prop]=E.now}}}});if(document.documentElement.getBoundingClientRect){o.fn.offset=function(){if(!this[0]){return{top:0,left:0}}if(this[0]===this[0].ownerDocument.body){return o.offset.bodyOffset(this[0])}var G=this[0].getBoundingClientRect(),J=this[0].ownerDocument,F=J.body,E=J.documentElement,L=E.clientTop||F.clientTop||0,K=E.clientLeft||F.clientLeft||0,I=G.top+(self.pageYOffset||o.boxModel&&E.scrollTop||F.scrollTop)-L,H=G.left+(self.pageXOffset||o.boxModel&&E.scrollLeft||F.scrollLeft)-K;return{top:I,left:H}}}else{o.fn.offset=function(){if(!this[0]){return{top:0,left:0}}if(this[0]===this[0].ownerDocument.body){return o.offset.bodyOffset(this[0])}o.offset.initialized||o.offset.initialize();var J=this[0],G=J.offsetParent,F=J,O=J.ownerDocument,M,H=O.documentElement,K=O.body,L=O.defaultView,E=L.getComputedStyle(J,null),N=J.offsetTop,I=J.offsetLeft;while((J=J.parentNode)&&J!==K&&J!==H){M=L.getComputedStyle(J,null);N-=J.scrollTop,I-=J.scrollLeft;if(J===G){N+=J.offsetTop,I+=J.offsetLeft;if(o.offset.doesNotAddBorder&&!(o.offset.doesAddBorderForTableAndCells&&/^t(able|d|h)$/i.test(J.tagName))){N+=parseInt(M.borderTopWidth,10)||0,I+=parseInt(M.borderLeftWidth,10)||0}F=G,G=J.offsetParent}if(o.offset.subtractsBorderForOverflowNotVisible&&M.overflow!=="visible"){N+=parseInt(M.borderTopWidth,10)||0,I+=parseInt(M.borderLeftWidth,10)||0}E=M}if(E.position==="relative"||E.position==="static"){N+=K.offsetTop,I+=K.offsetLeft}if(E.position==="fixed"){N+=Math.max(H.scrollTop,K.scrollTop),I+=Math.max(H.scrollLeft,K.scrollLeft)}return{top:N,left:I}}}o.offset={initialize:function(){if(this.initialized){return}var L=document.body,F=document.createElement("div"),H,G,N,I,M,E,J=L.style.marginTop,K='<div style="position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;"><div></div></div><table style="position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;" cellpadding="0" cellspacing="0"><tr><td></td></tr></table>';M={position:"absolute",top:0,left:0,margin:0,border:0,width:"1px",height:"1px",visibility:"hidden"};for(E in M){F.style[E]=M[E]}F.innerHTML=K;L.insertBefore(F,L.firstChild);H=F.firstChild,G=H.firstChild,I=H.nextSibling.firstChild.firstChild;this.doesNotAddBorder=(G.offsetTop!==5);this.doesAddBorderForTableAndCells=(I.offsetTop===5);H.style.overflow="hidden",H.style.position="relative";this.subtractsBorderForOverflowNotVisible=(G.offsetTop===-5);L.style.marginTop="1px";this.doesNotIncludeMarginInBodyOffset=(L.offsetTop===0);L.style.marginTop=J;L.removeChild(F);this.initialized=true},bodyOffset:function(E){o.offset.initialized||o.offset.initialize();var G=E.offsetTop,F=E.offsetLeft;if(o.offset.doesNotIncludeMarginInBodyOffset){G+=parseInt(o.curCSS(E,"marginTop",true),10)||0,F+=parseInt(o.curCSS(E,"marginLeft",true),10)||0}return{top:G,left:F}}};o.fn.extend({position:function(){var I=0,H=0,F;if(this[0]){var G=this.offsetParent(),J=this.offset(),E=/^body|html$/i.test(G[0].tagName)?{top:0,left:0}:G.offset();J.top-=j(this,"marginTop");J.left-=j(this,"marginLeft");E.top+=j(G,"borderTopWidth");E.left+=j(G,"borderLeftWidth");F={top:J.top-E.top,left:J.left-E.left}}return F},offsetParent:function(){var E=this[0].offsetParent||document.body;while(E&&(!/^body|html$/i.test(E.tagName)&&o.css(E,"position")=="static")){E=E.offsetParent}return o(E)}});o.each(["Left","Top"],function(F,E){var G="scroll"+E;o.fn[G]=function(H){if(!this[0]){return null}return H!==g?this.each(function(){this==l||this==document?l.scrollTo(!F?H:o(l).scrollLeft(),F?H:o(l).scrollTop()):this[G]=H}):this[0]==l||this[0]==document?self[F?"pageYOffset":"pageXOffset"]||o.boxModel&&document.documentElement[G]||document.body[G]:this[0][G]}});o.each(["Height","Width"],function(I,G){var E=I?"Left":"Top",H=I?"Right":"Bottom",F=G.toLowerCase();o.fn["inner"+G]=function(){return this[0]?o.css(this[0],F,false,"padding"):null};o.fn["outer"+G]=function(K){return this[0]?o.css(this[0],F,false,K?"margin":"border"):null};var J=G.toLowerCase();o.fn[J]=function(K){return this[0]==l?document.compatMode=="CSS1Compat"&&document.documentElement["client"+G]||document.body["client"+G]:this[0]==document?Math.max(document.documentElement["client"+G],document.body["scroll"+G],document.documentElement["scroll"+G],document.body["offset"+G],document.documentElement["offset"+G]):K===g?(this.length?o.css(this[0],J):null):this.css(J,typeof K==="string"?K:K+"px")}})})();

jQuery.noConflict();

// Simple JavaScript Templating
// John Resig - http://ejohn.org/ - MIT Licensed
// http://ejohn.org/blog/javascript-micro-templating/
(function(){
  var cache = {};

  this.tmpl = function tmpl(str, data){
    // Figure out if we're getting a template, or if we need to
    // load the template - and be sure to cache the result.
    var fn = !/\W/.test(str) ?
      cache[str] = cache[str] ||
        tmpl(document.getElementById(str).innerHTML) :
      
      // Generate a reusable function that will serve as a template
      // generator (and which will be cached).
      new Function("obj",
        "var p=[],print=function(){p.push.apply(p,arguments);};" +
        
        // Introduce the data as local variables using with(){}
        "with(obj){p.push('" +
        
        // Convert the template into pure JavaScript
        str
          .replace(/[\r\t\n]/g, " ")
          .split("<@").join("\t")
          .replace(/((^|@>)[^\t]*)'/g, "$1\r")
          .replace(/\t=(.*?)@>/g, "',$1,'")
          .split("\t").join("');")
          .split("@>").join("p.push('")
          .split("\r").join("\\'")
      + "');}return p.join('');");
    
    // Provide some basic currying to the user
    return data ? fn( data ) : fn;
  };
})();

/*  Prototype JavaScript framework, version 1.6.0.3
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.3',

  Browser: {
    IE:     !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Opera:  navigator.userAgent.indexOf('Opera') > -1,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 &&
      navigator.userAgent.indexOf('KHTML') === -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div')['__proto__'] &&
      document.createElement('div')['__proto__'] !==
        document.createElement('form')['__proto__']
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return !!(object && object.nodeType == 1);
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  defer: function() {
    var args = [0.01].concat($A(arguments));
    return this.delay.apply(this, args);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    // In Safari, only use the `toArray` method if it's not a NodeList.
    // A NodeList is a function, has an function `item` property, and a numeric
    // `length` property. Adapted from Google Doctype.
    if (!(typeof iterable === 'function' && typeof iterable.length ===
        'number' && typeof iterable.item === 'function') && iterable.toArray)
      return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      // simulating poorly supported hasOwnProperty
      if (this._object[key] !== Object.prototype[key])
        return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.inject([], function(results, pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return results.concat(values.map(toQueryPair.curry(key)));
        } else results.push(toQueryPair(key, values));
        return results;
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
  if (element) this.Element.prototype = element.prototype;
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = element.getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      // IE throws an error if element is not in document
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div')['__proto__']) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div')['__proto__'];
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName.toUpperCase(), property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName)['__proto__'];
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { }, B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      if (B.WebKit && !document.evaluate) {
        // Safari <3.0 needs self.innerWidth/Height
        dimensions[d] = self['inner' + D];
      } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
        // Opera <9.5 needs document.body.clientWidth/Height
        dimensions[d] = document.body['client' + D]
      } else {
        dimensions[d] = document.documentElement['client' + D];
      }
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(e))
      return false;

    return true;
  },

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (!Selector._div) Selector._div = new Element('div');

    // Make sure the browser treats the selector as valid. Test on an
    // isolated element to minimize cost of this check.
    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
            new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        // querySelectorAll queries document-wide, then filters to descendants
        // of the context element. That's not what we want.
        // Add an explicit context to the selector if necessary.
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || node.firstChild) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled && (!node.type || node.type !== 'hidden'))
          results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      event = Event.extend(event);

      var node          = event.target,
          type          = event.type,
          currentTarget = event.currentTarget;

      if (currentTarget && currentTarget.tagName) {
        // Firefox screws up the "click" event when moving between radio buttons
        // via arrow keys. It also screws up the "load" and "error" events on images,
        // reporting the document as the target instead of the original image.
        if (type === 'load' || type === 'error' ||
          (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
            && currentTarget.type === 'radio'))
              node = currentTarget;
      }
      if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
      return Element.extend(node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      var docElement = document.documentElement,
      body = document.body || { scrollLeft: 0, scrollTop: 0 };
      return {
        x: event.pageX || (event.clientX +
          (docElement.scrollLeft || body.scrollLeft) -
          (docElement.clientLeft || 0)),
        y: event.pageY || (event.clientY +
          (docElement.scrollTop || body.scrollTop) -
          (docElement.clientTop || 0))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }


  // Internet Explorer needs to remove event handlers on page unload
  // in order to avoid memory leaks.
  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  // Safari has a dummy event handler on page unload so that it won't
  // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
  // object when page is returned to via the back button using its bfcache.
  if (Prototype.Browser.WebKit) {
    window.addEventListener('unload', Prototype.emptyFunction, false);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// converts rgb() and #xxx to #xxxxxx format,
// returns self (or first argument) if not convertable
String.prototype.parseColor = function() {
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {
    var cols = this.slice(4,this.length-1).split(',');
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  } else {
    if (this.slice(0,1) == '#') {
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
      if (this.length==7) color = this.toLowerCase();
    }
  }
  return (color.length==7 ? color : (arguments[0] || this));
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);
  element.setStyle({fontSize: (percent/100) + 'em'});
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + .5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + .75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + .5;
    },
    pulse: function(pos, pulses) {
      return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
    },
    spring: function(pos) {
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';

    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character),
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') ||
        Object.isFunction(element)) &&
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;

    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ?
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();

    var position = Object.isString(effect.options.queue) ?
      effect.options.queue : effect.options.queue.position;

    switch(position) {
      case 'front':
        // move unstarted effects after this effect
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }

    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);

    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++)
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;

    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;

    this.render = (function() {
      function dispatch(effect, eventName) {
        if (effect.options[eventName + 'Internal'])
          effect.options[eventName + 'Internal'](effect);
        if (effect.options[eventName])
          effect.options[eventName](effect);
      }

      return function(pos) {
        if (this.state === "idle") {
          this.state = "running";
          dispatch(this, 'beforeSetup');
          if (this.setup) this.setup();
          dispatch(this, 'afterSetup');
        }
        if (this.state === "running") {
          pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
          this.position = pos;
          dispatch(this, 'beforeUpdate');
          if (this.update) this.update(pos);
          dispatch(this, 'afterUpdate');
        }
      };
    })();

    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish();
        this.event('afterFinish');
        return;
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(),
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) :
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element,
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');

    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));

    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;

    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));

    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;

    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
  scrollOffsets = document.viewport.getScrollOffsets(),
  elementOffsets = $(element).cumulativeOffset();

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()); }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) {
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity});
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show();
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = {
    opacity: element.getInlineOpacity(),
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200,
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
     Object.extend({ duration: 1.0,
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element);
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false,
      scaleX: false,
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      }
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, {
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) {
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      });
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned();
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        }
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}); }}); }}); }}); }}); }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false,
    scaleX: false,
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, {
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping();
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping();
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var initialMoveX, initialMoveY;
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0;
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }

  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01,
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show();
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
             }
           }, options)
      );
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }

  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping();
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { },
    oldOpacity = element.getInlineOpacity(),
    transition = options.transition || Effect.Transitions.linear,
    reverser   = function(pos){
      return 1 - transition((-Math.cos((pos*(options.pulses||5)*2)*Math.PI)/2) + .5);
    };

  return new Effect.Opacity(element,
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, {
      scaleContent: false,
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });

    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        };
      }
    }
    this.start(options);
  },

  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 );
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return {
        style: property.camelize(),
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      );
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] =
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) +
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');

Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }

  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]);
  });

  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
}

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element);
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) {
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    };
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

if(Object.isUndefined(Effect))
  throw("dragdrop.js requires including script.aculo.us' effects.js library");

var Droppables = {
  drops: [],

  remove: function(element) {
    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
  },

  add: function(element) {
    element = $(element);
    var options = Object.extend({
      greedy:     true,
      hoverclass: null,
      tree:       false
    }, arguments[1] || { });

    // cache containers
    if(options.containment) {
      options._containers = [];
      var containment = options.containment;
      if(Object.isArray(containment)) {
        containment.each( function(c) { options._containers.push($(c)) });
      } else {
        options._containers.push($(containment));
      }
    }

    if(options.accept) options.accept = [options.accept].flatten();

    Element.makePositioned(element); // fix IE
    options.element = element;

    this.drops.push(options);
  },

  findDeepestChild: function(drops) {
    deepest = drops[0];

    for (i = 1; i < drops.length; ++i)
      if (Element.isParent(drops[i].element, deepest.element))
        deepest = drops[i];

    return deepest;
  },

  isContained: function(element, drop) {
    var containmentNode;
    if(drop.tree) {
      containmentNode = element.treeNode;
    } else {
      containmentNode = element.parentNode;
    }
    return drop._containers.detect(function(c) { return containmentNode == c });
  },

  isAffected: function(point, element, drop) {
    return (
      (drop.element!=element) &&
      ((!drop._containers) ||
        this.isContained(element, drop)) &&
      ((!drop.accept) ||
        (Element.classNames(element).detect(
          function(v) { return drop.accept.include(v) } ) )) &&
      Position.within(drop.element, point[0], point[1]) );
  },

  deactivate: function(drop) {
    if(drop.hoverclass)
      Element.removeClassName(drop.element, drop.hoverclass);
    this.last_active = null;
  },

  activate: function(drop) {
    if(drop.hoverclass)
      Element.addClassName(drop.element, drop.hoverclass);
    this.last_active = drop;
  },

  show: function(point, element) {
    if(!this.drops.length) return;
    var drop, affected = [];

    this.drops.each( function(drop) {
      if(Droppables.isAffected(point, element, drop))
        affected.push(drop);
    });

    if(affected.length>0)
      drop = Droppables.findDeepestChild(affected);

    if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
    if (drop) {
      Position.within(drop.element, point[0], point[1]);
      if(drop.onHover)
        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));

      if (drop != this.last_active) Droppables.activate(drop);
    }
  },

  fire: function(event, element) {
    if(!this.last_active) return;
    Position.prepare();

    if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
      if (this.last_active.onDrop) {
        this.last_active.onDrop(element, this.last_active.element, event);
        return true;
      }
  },

  reset: function() {
    if(this.last_active)
      this.deactivate(this.last_active);
  }
};

var Draggables = {
  drags: [],
  observers: [],

  register: function(draggable) {
    if(this.drags.length == 0) {
      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
      this.eventKeypress  = this.keyPress.bindAsEventListener(this);

      Event.observe(document, "mouseup", this.eventMouseUp);
      Event.observe(document, "mousemove", this.eventMouseMove);
      Event.observe(document, "keypress", this.eventKeypress);
    }
    this.drags.push(draggable);
  },

  unregister: function(draggable) {
    this.drags = this.drags.reject(function(d) { return d==draggable });
    if(this.drags.length == 0) {
      Event.stopObserving(document, "mouseup", this.eventMouseUp);
      Event.stopObserving(document, "mousemove", this.eventMouseMove);
      Event.stopObserving(document, "keypress", this.eventKeypress);
    }
  },

  activate: function(draggable) {
    if(draggable.options.delay) {
      this._timeout = setTimeout(function() {
        Draggables._timeout = null;
        window.focus();
        Draggables.activeDraggable = draggable;
      }.bind(this), draggable.options.delay);
    } else {
      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
      this.activeDraggable = draggable;
    }
  },

  deactivate: function() {
    this.activeDraggable = null;
  },

  updateDrag: function(event) {
    if(!this.activeDraggable) return;
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    // Mozilla-based browsers fire successive mousemove events with
    // the same coordinates, prevent needless redrawing (moz bug?)
    if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
    this._lastPointer = pointer;

    this.activeDraggable.updateDrag(event, pointer);
  },

  endDrag: function(event) {
    if(this._timeout) {
      clearTimeout(this._timeout);
      this._timeout = null;
    }
    if(!this.activeDraggable) return;
    this._lastPointer = null;
    this.activeDraggable.endDrag(event);
    this.activeDraggable = null;
  },

  keyPress: function(event) {
    if(this.activeDraggable)
      this.activeDraggable.keyPress(event);
  },

  addObserver: function(observer) {
    this.observers.push(observer);
    this._cacheObserverCallbacks();
  },

  removeObserver: function(element) {  // element instead of observer fixes mem leaks
    this.observers = this.observers.reject( function(o) { return o.element==element });
    this._cacheObserverCallbacks();
  },

  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
    if(this[eventName+'Count'] > 0)
      this.observers.each( function(o) {
        if(o[eventName]) o[eventName](eventName, draggable, event);
      });
    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
  },

  _cacheObserverCallbacks: function() {
    ['onStart','onEnd','onDrag'].each( function(eventName) {
      Draggables[eventName+'Count'] = Draggables.observers.select(
        function(o) { return o[eventName]; }
      ).length;
    });
  }
};

/*--------------------------------------------------------------------------*/

var Draggable = Class.create({
  initialize: function(element) {
    var defaults = {
      handle: false,
      reverteffect: function(element, top_offset, left_offset) {
        var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
          queue: {scope:'_draggable', position:'end'}
        });
      },
      endeffect: function(element) {
        var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
          queue: {scope:'_draggable', position:'end'},
          afterFinish: function(){
            Draggable._dragging[element] = false
          }
        });
      },
      zindex: 1000,
      revert: false,
      quiet: false,
      scroll: false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
      delay: 0
    };

    if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
      Object.extend(defaults, {
        starteffect: function(element) {
          element._opacity = Element.getOpacity(element);
          Draggable._dragging[element] = true;
          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
        }
      });

    var options = Object.extend(defaults, arguments[1] || { });

    this.element = $(element);

    if(options.handle && Object.isString(options.handle))
      this.handle = this.element.down('.'+options.handle, 0);

    if(!this.handle) this.handle = $(options.handle);
    if(!this.handle) this.handle = this.element;

    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
      options.scroll = $(options.scroll);
      this._isScrollChild = Element.childOf(this.element, options.scroll);
    }

    Element.makePositioned(this.element); // fix IE

    this.options  = options;
    this.dragging = false;

    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
    Event.observe(this.handle, "mousedown", this.eventMouseDown);

    Draggables.register(this);
  },

  destroy: function() {
    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
    Draggables.unregister(this);
  },

  currentDelta: function() {
    return([
      parseInt(Element.getStyle(this.element,'left') || '0'),
      parseInt(Element.getStyle(this.element,'top') || '0')]);
  },

  initDrag: function(event) {
    if (event.metaKey || event.ctrlKey || event.shiftKey) {
      Event.stop(event);
      return;
    }
    if(!Object.isUndefined(Draggable._dragging[this.element]) &&
      Draggable._dragging[this.element]) return;
    if(Event.isLeftClick(event)) {
      // abort on form elements, fixes a Firefox issue
      var src = Event.element(event);
      if((tag_name = src.tagName.toUpperCase()) && (
        tag_name=='INPUT' ||
        tag_name=='SELECT' ||
        tag_name=='OPTION' ||
        tag_name=='BUTTON' ||
        tag_name=='TEXTAREA')) return;

      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      var pos     = Position.cumulativeOffset(this.element);
      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });

      Draggables.activate(this);
      Event.stop(event);
    }
  },

  startDrag: function(event) {
    this.dragging = true;
    if(!this.delta)
      this.delta = this.currentDelta();

    if(this.options.zindex) {
      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
      this.element.style.zIndex = this.options.zindex;
    }

    if(this.options.ghosting) {
      this._clone = this.element.cloneNode(true);
      this._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
      if (!this._originallyAbsolute)
        Position.absolutize(this.element);
      this.element.parentNode.insertBefore(this._clone, this.element);
    }

    if(this.options.scroll) {
      if (this.options.scroll == window) {
        var where = this._getWindowScroll(this.options.scroll);
        this.originalScrollLeft = where.left;
        this.originalScrollTop = where.top;
      } else {
        this.originalScrollLeft = this.options.scroll.scrollLeft;
        this.originalScrollTop = this.options.scroll.scrollTop;
      }
    }

    Draggables.notify('onStart', this, event);

    if(this.options.starteffect) this.options.starteffect(this.element);
  },

  updateDrag: function(event, pointer) {
    if(!this.dragging) this.startDrag(event);

    if(!this.options.quiet){
      Position.prepare();
      Droppables.show(pointer, this.element);
    }

    Draggables.notify('onDrag', this, event);

    this.draw(pointer);
    if(this.options.change) this.options.change(this);

    if(this.options.scroll) {
      this.stopScrolling();

      var p;
      if (this.options.scroll == window) {
        with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
      } else {
        p = Position.page(this.options.scroll);
        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
        p[1] += this.options.scroll.scrollTop + Position.deltaY;
        p.push(p[0]+this.options.scroll.offsetWidth);
        p.push(p[1]+this.options.scroll.offsetHeight);
      }
      var speed = [0,0];
      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
      this.startScrolling(speed);
    }

    // fix AppleWebKit rendering
    if(Prototype.Browser.WebKit) window.scrollBy(0,0);

    Event.stop(event);
  },

  finishDrag: function(event, success) {
    this.dragging = false;

    if(this.options.quiet){
      Position.prepare();
      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      Droppables.show(pointer, this.element);
    }

    if(this.options.ghosting) {
      if (!this._originallyAbsolute)
        Position.relativize(this.element);
      delete this._originallyAbsolute;
      Element.remove(this._clone);
      this._clone = null;
    }

    var dropped = false;
    if(success) {
      dropped = Droppables.fire(event, this.element);
      if (!dropped) dropped = false;
    }
    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
    Draggables.notify('onEnd', this, event);

    var revert = this.options.revert;
    if(revert && Object.isFunction(revert)) revert = revert(this.element);

    var d = this.currentDelta();
    if(revert && this.options.reverteffect) {
      if (dropped == 0 || revert != 'failure')
        this.options.reverteffect(this.element,
          d[1]-this.delta[1], d[0]-this.delta[0]);
    } else {
      this.delta = d;
    }

    if(this.options.zindex)
      this.element.style.zIndex = this.originalZ;

    if(this.options.endeffect)
      this.options.endeffect(this.element);

    Draggables.deactivate(this);
    Droppables.reset();
  },

  keyPress: function(event) {
    if(event.keyCode!=Event.KEY_ESC) return;
    this.finishDrag(event, false);
    Event.stop(event);
  },

  endDrag: function(event) {
    if(!this.dragging) return;
    this.stopScrolling();
    this.finishDrag(event, true);
    Event.stop(event);
  },

  draw: function(point) {
    var pos = Position.cumulativeOffset(this.element);
    if(this.options.ghosting) {
      var r   = Position.realOffset(this.element);
      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
    }

    var d = this.currentDelta();
    pos[0] -= d[0]; pos[1] -= d[1];

    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
    }

    var p = [0,1].map(function(i){
      return (point[i]-pos[i]-this.offset[i])
    }.bind(this));

    if(this.options.snap) {
      if(Object.isFunction(this.options.snap)) {
        p = this.options.snap(p[0],p[1],this);
      } else {
      if(Object.isArray(this.options.snap)) {
        p = p.map( function(v, i) {
          return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this));
      } else {
        p = p.map( function(v) {
          return (v/this.options.snap).round()*this.options.snap }.bind(this));
      }
    }}

    var style = this.element.style;
    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
      style.left = p[0] + "px";
    if((!this.options.constraint) || (this.options.constraint=='vertical'))
      style.top  = p[1] + "px";

    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
  },

  stopScrolling: function() {
    if(this.scrollInterval) {
      clearInterval(this.scrollInterval);
      this.scrollInterval = null;
      Draggables._lastScrollPointer = null;
    }
  },

  startScrolling: function(speed) {
    if(!(speed[0] || speed[1])) return;
    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
    this.lastScrolled = new Date();
    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
  },

  scroll: function() {
    var current = new Date();
    var delta = current - this.lastScrolled;
    this.lastScrolled = current;
    if(this.options.scroll == window) {
      with (this._getWindowScroll(this.options.scroll)) {
        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
          var d = delta / 1000;
          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
        }
      }
    } else {
      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
    }

    Position.prepare();
    Droppables.show(Draggables._lastPointer, this.element);
    Draggables.notify('onDrag', this);
    if (this._isScrollChild) {
      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
      if (Draggables._lastScrollPointer[0] < 0)
        Draggables._lastScrollPointer[0] = 0;
      if (Draggables._lastScrollPointer[1] < 0)
        Draggables._lastScrollPointer[1] = 0;
      this.draw(Draggables._lastScrollPointer);
    }

    if(this.options.change) this.options.change(this);
  },

  _getWindowScroll: function(w) {
    var T, L, W, H;
    with (w.document) {
      if (w.document.documentElement && documentElement.scrollTop) {
        T = documentElement.scrollTop;
        L = documentElement.scrollLeft;
      } else if (w.document.body) {
        T = body.scrollTop;
        L = body.scrollLeft;
      }
      if (w.innerWidth) {
        W = w.innerWidth;
        H = w.innerHeight;
      } else if (w.document.documentElement && documentElement.clientWidth) {
        W = documentElement.clientWidth;
        H = documentElement.clientHeight;
      } else {
        W = body.offsetWidth;
        H = body.offsetHeight;
      }
    }
    return { top: T, left: L, width: W, height: H };
  }
});

Draggable._dragging = { };

/*--------------------------------------------------------------------------*/

var SortableObserver = Class.create({
  initialize: function(element, observer) {
    this.element   = $(element);
    this.observer  = observer;
    this.lastValue = Sortable.serialize(this.element);
  },

  onStart: function() {
    this.lastValue = Sortable.serialize(this.element);
  },

  onEnd: function() {
    Sortable.unmark();
    if(this.lastValue != Sortable.serialize(this.element))
      this.observer(this.element)
  }
});

var Sortable = {
  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,

  sortables: { },

  _findRootElement: function(element) {
    while (element.tagName.toUpperCase() != "BODY") {
      if(element.id && Sortable.sortables[element.id]) return element;
      element = element.parentNode;
    }
  },

  options: function(element) {
    element = Sortable._findRootElement($(element));
    if(!element) return;
    return Sortable.sortables[element.id];
  },

  destroy: function(element){
    element = $(element);
    var s = Sortable.sortables[element.id];

    if(s) {
      Draggables.removeObserver(s.element);
      s.droppables.each(function(d){ Droppables.remove(d) });
      s.draggables.invoke('destroy');

      delete Sortable.sortables[s.element.id];
    }
  },

  create: function(element) {
    element = $(element);
    var options = Object.extend({
      element:     element,
      tag:         'li',       // assumes li children, override with tag: 'tagname'
      dropOnEmpty: false,
      tree:        false,
      treeTag:     'ul',
      overlap:     'vertical', // one of 'vertical', 'horizontal'
      constraint:  'vertical', // one of 'vertical', 'horizontal', false
      containment: element,    // also takes array of elements (or id's); or false
      handle:      false,      // or a CSS class
      only:        false,
      delay:       0,
      hoverclass:  null,
      ghosting:    false,
      quiet:       false,
      scroll:      false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      format:      this.SERIALIZE_RULE,

      // these take arrays of elements or ids and can be
      // used for better initialization performance
      elements:    false,
      handles:     false,

      onChange:    Prototype.emptyFunction,
      onUpdate:    Prototype.emptyFunction
    }, arguments[1] || { });

    // clear any old sortable with same element
    this.destroy(element);

    // build options for the draggables
    var options_for_draggable = {
      revert:      true,
      quiet:       options.quiet,
      scroll:      options.scroll,
      scrollSpeed: options.scrollSpeed,
      scrollSensitivity: options.scrollSensitivity,
      delay:       options.delay,
      ghosting:    options.ghosting,
      constraint:  options.constraint,
      handle:      options.handle };

    if(options.onStart)
      options_for_draggable.onStart = options.onStart;

    if(options.onDrag)
      options_for_draggable.onDrag = options.onDrag;

    if(options.onEnd)
      options_for_draggable.onEnd = options.onEnd;

    if(options.starteffect)
      options_for_draggable.starteffect = options.starteffect;

    if(options.reverteffect)
      options_for_draggable.reverteffect = options.reverteffect;
    else
      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
        element.style.top  = 0;
        element.style.left = 0;
      };

    if(options.endeffect)
      options_for_draggable.endeffect = options.endeffect;

    if(options.zindex)
      options_for_draggable.zindex = options.zindex;

    // build options for the droppables
    var options_for_droppable = {
      overlap:     options.overlap,
      containment: options.containment,
      tree:        options.tree,
      hoverclass:  options.hoverclass,
      onHover:     Sortable.onHover
    };

    var options_for_tree = {
      onHover:      Sortable.onEmptyHover,
      overlap:      options.overlap,
      containment:  options.containment,
      hoverclass:   options.hoverclass
    };

    // fix for gecko engine
    Element.cleanWhitespace(element);

    options.draggables = [];
    options.droppables = [];

    // drop on empty handling
    if(options.dropOnEmpty || options.tree) {
      Droppables.add(element, options_for_tree);
      options.droppables.push(element);
    }

    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
      var handle = options.handles ? $(options.handles[i]) :
        (options.handle ? $(e).select('.' + options.handle)[0] : e);
      options.draggables.push(
        new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
      Droppables.add(e, options_for_droppable);
      if(options.tree) e.treeNode = element;
      options.droppables.push(e);
    });

    if(options.tree) {
      (Sortable.findTreeElements(element, options) || []).each( function(e) {
        Droppables.add(e, options_for_tree);
        e.treeNode = element;
        options.droppables.push(e);
      });
    }

    // keep reference
    this.sortables[element.id] = options;

    // for onupdate
    Draggables.addObserver(new SortableObserver(element, options.onUpdate));

  },

  // return all suitable-for-sortable elements in a guaranteed order
  findElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.tag);
  },

  findTreeElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.treeTag);
  },

  onHover: function(element, dropon, overlap) {
    if(Element.isParent(dropon, element)) return;

    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
      return;
    } else if(overlap>0.5) {
      Sortable.mark(dropon, 'before');
      if(dropon.previousSibling != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, dropon);
        if(dropon.parentNode!=oldParentNode)
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    } else {
      Sortable.mark(dropon, 'after');
      var nextElement = dropon.nextSibling || null;
      if(nextElement != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, nextElement);
        if(dropon.parentNode!=oldParentNode)
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    }
  },

  onEmptyHover: function(element, dropon, overlap) {
    var oldParentNode = element.parentNode;
    var droponOptions = Sortable.options(dropon);

    if(!Element.isParent(dropon, element)) {
      var index;

      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
      var child = null;

      if(children) {
        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);

        for (index = 0; index < children.length; index += 1) {
          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
            offset -= Element.offsetSize (children[index], droponOptions.overlap);
          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
            child = index + 1 < children.length ? children[index + 1] : null;
            break;
          } else {
            child = children[index];
            break;
          }
        }
      }

      dropon.insertBefore(element, child);

      Sortable.options(oldParentNode).onChange(element);
      droponOptions.onChange(element);
    }
  },

  unmark: function() {
    if(Sortable._marker) Sortable._marker.hide();
  },

  mark: function(dropon, position) {
    // mark on ghosting only
    var sortable = Sortable.options(dropon.parentNode);
    if(sortable && !sortable.ghosting) return;

    if(!Sortable._marker) {
      Sortable._marker =
        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
          hide().addClassName('dropmarker').setStyle({position:'absolute'});
      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
    }
    var offsets = Position.cumulativeOffset(dropon);
    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});

    if(position=='after')
      if(sortable.overlap == 'horizontal')
        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
      else
        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});

    Sortable._marker.show();
  },

  _tree: function(element, options, parent) {
    var children = Sortable.findElements(element, options) || [];

    for (var i = 0; i < children.length; ++i) {
      var match = children[i].id.match(options.format);

      if (!match) continue;

      var child = {
        id: encodeURIComponent(match ? match[1] : null),
        element: element,
        parent: parent,
        children: [],
        position: parent.children.length,
        container: $(children[i]).down(options.treeTag)
      };

      /* Get the element containing the children and recurse over it */
      if (child.container)
        this._tree(child.container, options, child);

      parent.children.push (child);
    }

    return parent;
  },

  tree: function(element) {
    element = $(element);
    var sortableOptions = this.options(element);
    var options = Object.extend({
      tag: sortableOptions.tag,
      treeTag: sortableOptions.treeTag,
      only: sortableOptions.only,
      name: element.id,
      format: sortableOptions.format
    }, arguments[1] || { });

    var root = {
      id: null,
      parent: null,
      children: [],
      container: element,
      position: 0
    };

    return Sortable._tree(element, options, root);
  },

  /* Construct a [i] index for a particular node */
  _constructIndex: function(node) {
    var index = '';
    do {
      if (node.id) index = '[' + node.position + ']' + index;
    } while ((node = node.parent) != null);
    return index;
  },

  sequence: function(element) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[1] || { });

    return $(this.findElements(element, options) || []).map( function(item) {
      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
    });
  },

  setSequence: function(element, new_sequence) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[2] || { });

    var nodeMap = { };
    this.findElements(element, options).each( function(n) {
        if (n.id.match(options.format))
            nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
        n.parentNode.removeChild(n);
    });

    new_sequence.each(function(ident) {
      var n = nodeMap[ident];
      if (n) {
        n[1].appendChild(n[0]);
        delete nodeMap[ident];
      }
    });
  },

  serialize: function(element) {
    element = $(element);
    var options = Object.extend(Sortable.options(element), arguments[1] || { });
    var name = encodeURIComponent(
      (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);

    if (options.tree) {
      return Sortable.tree(element, arguments[1]).children.map( function (item) {
        return [name + Sortable._constructIndex(item) + "[id]=" +
                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
      }).flatten().join('&');
    } else {
      return Sortable.sequence(element, arguments[1]).map( function(item) {
        return name + "[]=" + encodeURIComponent(item);
      }).join('&');
    }
  }
};

// Returns true if child is contained within element
Element.isParent = function(child, element) {
  if (!child.parentNode || child == element) return false;
  if (child.parentNode == element) return true;
  return Element.isParent(child.parentNode, element);
};

Element.findChildren = function(element, only, recursive, tagName) {
  if(!element.hasChildNodes()) return null;
  tagName = tagName.toUpperCase();
  if(only) only = [only].flatten();
  var elements = [];
  $A(element.childNodes).each( function(e) {
    if(e.tagName && e.tagName.toUpperCase()==tagName &&
      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
        elements.push(e);
    if(recursive) {
      var grandchildren = Element.findChildren(e, only, recursive, tagName);
      if(grandchildren) elements.push(grandchildren);
    }
  });

  return (elements.length>0 ? elements.flatten() : []);
};

Element.offsetSize = function (element, type) {
  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
};

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2008 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2008 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// Autocompleter.Base handles all the autocompletion functionality
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least,
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most
// useful when one of the tokens is \n (a newline), as it
// allows smart autocompletion after linebreaks.

if(typeof Effect == 'undefined')
  throw("controls.js requires including script.aculo.us' effects.js library");

var Autocompleter = { };
Autocompleter.Base = Class.create({
  baseInitialize: function(element, update, options) {
    element          = $(element);
    this.element     = element;
    this.update      = $(update);
    this.hasFocus    = false;
    this.changed     = false;
    this.active      = false;
    this.index       = 0;
    this.entryCount  = 0;
    this.oldElementValue = this.element.value;

    if(this.setOptions)
      this.setOptions(options);
    else
      this.options = options || { };

    this.options.paramName    = this.options.paramName || this.element.name;
    this.options.tokens       = this.options.tokens || [];
    this.options.frequency    = this.options.frequency || 0.4;
    this.options.minChars     = this.options.minChars || 1;
    this.options.onShow       = this.options.onShow ||
      function(element, update){
        if(!update.style.position || update.style.position=='absolute') {
          update.style.position = 'absolute';
          Position.clone(element, update, {
            setHeight: false,
            offsetTop: element.offsetHeight
          });
        }
        Effect.Appear(update,{duration:0.15});
      };
    this.options.onHide = this.options.onHide ||
      function(element, update){ new Effect.Fade(update,{duration:0.15}) };

    if(typeof(this.options.tokens) == 'string')
      this.options.tokens = new Array(this.options.tokens);
    // Force carriage returns as token delimiters anyway
    if (!this.options.tokens.include('\n'))
      this.options.tokens.push('\n');

    this.observer = null;

    this.element.setAttribute('autocomplete','off');

    Element.hide(this.update);

    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
    if(!this.iefix &&
      (Prototype.Browser.IE) &&
      (Element.getStyle(this.update, 'position')=='absolute')) {
      new Insertion.After(this.update,
       '<iframe id="' + this.update.id + '_iefix" '+
       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
      this.iefix = $(this.update.id+'_iefix');
    }
    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
  },

  fixIEOverlapping: function() {
    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
    this.iefix.style.zIndex = 1;
    this.update.style.zIndex = 2;
    Element.show(this.iefix);
  },

  hide: function() {
    this.stopIndicator();
    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
    if(this.iefix) Element.hide(this.iefix);
  },

  startIndicator: function() {
    if(this.options.indicator) Element.show(this.options.indicator);
  },

  stopIndicator: function() {
    if(this.options.indicator) Element.hide(this.options.indicator);
  },

  onKeyPress: function(event) {
    if(this.active)
      switch(event.keyCode) {
       case Event.KEY_TAB:
       case Event.KEY_RETURN:
         this.selectEntry();
         Event.stop(event);
       case Event.KEY_ESC:
         this.hide();
         this.active = false;
         Event.stop(event);
         return;
       case Event.KEY_LEFT:
       case Event.KEY_RIGHT:
         return;
       case Event.KEY_UP:
         this.markPrevious();
         this.render();
         Event.stop(event);
         return;
       case Event.KEY_DOWN:
         this.markNext();
         this.render();
         Event.stop(event);
         return;
      }
     else
       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN ||
         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

    this.changed = true;
    this.hasFocus = true;

    if(this.observer) clearTimeout(this.observer);
      this.observer =
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
  },

  activate: function() {
    this.changed = false;
    this.hasFocus = true;
    this.getUpdatedChoices();
  },

  onHover: function(event) {
    var element = Event.findElement(event, 'LI');
    if(this.index != element.autocompleteIndex)
    {
        this.index = element.autocompleteIndex;
        this.render();
    }
    Event.stop(event);
  },

  onClick: function(event) {
    var element = Event.findElement(event, 'LI');
    this.index = element.autocompleteIndex;
    this.selectEntry();
    this.hide();
  },

  onBlur: function(event) {
    // needed to make click events working
    setTimeout(this.hide.bind(this), 250);
    this.hasFocus = false;
    this.active = false;
  },

  render: function() {
    if(this.entryCount > 0) {
      for (var i = 0; i < this.entryCount; i++)
        this.index==i ?
          Element.addClassName(this.getEntry(i),"selected") :
          Element.removeClassName(this.getEntry(i),"selected");
      if(this.hasFocus) {
        this.show();
        this.active = true;
      }
    } else {
      this.active = false;
      this.hide();
    }
  },

  markPrevious: function() {
    if(this.index > 0) this.index--;
      else this.index = this.entryCount-1;
    this.getEntry(this.index).scrollIntoView(true);
  },

  markNext: function() {
    if(this.index < this.entryCount-1) this.index++;
      else this.index = 0;
    this.getEntry(this.index).scrollIntoView(false);
  },

  getEntry: function(index) {
    return this.update.firstChild.childNodes[index];
  },

  getCurrentEntry: function() {
    return this.getEntry(this.index);
  },

  selectEntry: function() {
    this.active = false;
    this.updateElement(this.getCurrentEntry());
  },

  updateElement: function(selectedElement) {
    if (this.options.updateElement) {
      this.options.updateElement(selectedElement);
      return;
    }
    var value = '';
    if (this.options.select) {
      var nodes = $(selectedElement).select('.' + this.options.select) || [];
      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
    } else
      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');

    var bounds = this.getTokenBounds();
    if (bounds[0] != -1) {
      var newValue = this.element.value.substr(0, bounds[0]);
      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
      if (whitespace)
        newValue += whitespace[0];
      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
    } else {
      this.element.value = value;
    }
    this.oldElementValue = this.element.value;
    this.element.focus();

    if (this.options.afterUpdateElement)
      this.options.afterUpdateElement(this.element, selectedElement);
  },

  updateChoices: function(choices) {
    if(!this.changed && this.hasFocus) {
      this.update.innerHTML = choices;
      Element.cleanWhitespace(this.update);
      Element.cleanWhitespace(this.update.down());

      if(this.update.firstChild && this.update.down().childNodes) {
        this.entryCount =
          this.update.down().childNodes.length;
        for (var i = 0; i < this.entryCount; i++) {
          var entry = this.getEntry(i);
          entry.autocompleteIndex = i;
          this.addObservers(entry);
        }
      } else {
        this.entryCount = 0;
      }

      this.stopIndicator();
      this.index = 0;

      if(this.entryCount==1 && this.options.autoSelect) {
        this.selectEntry();
        this.hide();
      } else {
        this.render();
      }
    }
  },

  addObservers: function(element) {
    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
  },

  onObserverEvent: function() {
    this.changed = false;
    this.tokenBounds = null;
    if(this.getToken().length>=this.options.minChars) {
      this.getUpdatedChoices();
    } else {
      this.active = false;
      this.hide();
    }
    this.oldElementValue = this.element.value;
  },

  getToken: function() {
    var bounds = this.getTokenBounds();
    return this.element.value.substring(bounds[0], bounds[1]).strip();
  },

  getTokenBounds: function() {
    if (null != this.tokenBounds) return this.tokenBounds;
    var value = this.element.value;
    if (value.strip().empty()) return [-1, 0];
    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
    var offset = (diff == this.oldElementValue.length ? 1 : 0);
    var prevTokenPos = -1, nextTokenPos = value.length;
    var tp;
    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
      if (tp > prevTokenPos) prevTokenPos = tp;
      tp = value.indexOf(this.options.tokens[index], diff + offset);
      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
    }
    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
  }
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
  var boundary = Math.min(newS.length, oldS.length);
  for (var index = 0; index < boundary; ++index)
    if (newS[index] != oldS[index])
      return index;
  return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
  initialize: function(element, update, url, options) {
    this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
  },

  getUpdatedChoices: function() {
    this.startIndicator();

    var entry = encodeURIComponent(this.options.paramName) + '=' +
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams)
      this.options.parameters += '&' + this.options.defaultParams;

    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    this.updateChoices(request.responseText);
  }
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector'
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create(Autocompleter.Base, {
  initialize: function(element, update, array, options) {
    this.baseInitialize(element, update, options);
    this.options.array = array;
  },

  getUpdatedChoices: function() {
    this.updateChoices(this.options.selector(this));
  },

  setOptions: function(options) {
    this.options = Object.extend({
      choices: 10,
      partialSearch: true,
      partialChars: 2,
      ignoreCase: true,
      fullSearch: false,
      selector: function(instance) {
        var ret       = []; // Beginning matches
        var partial   = []; // Inside matches
        var entry     = instance.getToken();
        var count     = 0;

        for (var i = 0; i < instance.options.array.length &&
          ret.length < instance.options.choices ; i++) {

          var elem = instance.options.array[i];
          var foundPos = instance.options.ignoreCase ?
            elem.toLowerCase().indexOf(entry.toLowerCase()) :
            elem.indexOf(entry);

          while (foundPos != -1) {
            if (foundPos == 0 && elem.length != entry.length) {
              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" +
                elem.substr(entry.length) + "</li>");
              break;
            } else if (entry.length >= instance.options.partialChars &&
              instance.options.partialSearch && foundPos != -1) {
              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                  foundPos + entry.length) + "</li>");
                break;
              }
            }

            foundPos = instance.options.ignoreCase ?
              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) :
              elem.indexOf(entry, foundPos + 1);

          }
        }
        if (partial.length)
          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length));
        return "<ul>" + ret.join('') + "</ul>";
      }
    }, options || { });
  }
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
  setTimeout(function() {
    Field.activate(field);
  }, 1);
};

Ajax.InPlaceEditor = Class.create({
  initialize: function(element, url, options) {
    this.url = url;
    this.element = element = $(element);
    this.prepareOptions();
    this._controls = { };
    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
    Object.extend(this.options, options || { });
    if (!this.options.formId && this.element.id) {
      this.options.formId = this.element.id + '-inplaceeditor';
      if ($(this.options.formId))
        this.options.formId = '';
    }
    if (this.options.externalControl)
      this.options.externalControl = $(this.options.externalControl);
    if (!this.options.externalControl)
      this.options.externalControlOnly = false;
    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
    this.element.title = this.options.clickToEditText;
    this._boundCancelHandler = this.handleFormCancellation.bind(this);
    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
    this._boundWrapperHandler = this.wrapUp.bind(this);
    this.registerListeners();
  },
  checkForEscapeOrReturn: function(e) {
    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
    if (Event.KEY_ESC == e.keyCode)
      this.handleFormCancellation(e);
    else if (Event.KEY_RETURN == e.keyCode)
      this.handleFormSubmission(e);
  },
  createControl: function(mode, handler, extraClasses) {
    var control = this.options[mode + 'Control'];
    var text = this.options[mode + 'Text'];
    if ('button' == control) {
      var btn = document.createElement('input');
      btn.type = 'submit';
      btn.value = text;
      btn.className = 'editor_' + mode + '_button';
      if ('cancel' == mode)
        btn.onclick = this._boundCancelHandler;
      this._form.appendChild(btn);
      this._controls[mode] = btn;
    } else if ('link' == control) {
      var link = document.createElement('a');
      link.href = '#';
      link.appendChild(document.createTextNode(text));
      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
      link.className = 'editor_' + mode + '_link';
      if (extraClasses)
        link.className += ' ' + extraClasses;
      this._form.appendChild(link);
      this._controls[mode] = link;
    }
  },
  createEditField: function() {
    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
    var fld;
    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
      fld = document.createElement('input');
      fld.type = 'text';
      var size = this.options.size || this.options.cols || 0;
      if (0 < size) fld.size = size;
    } else {
      fld = document.createElement('textarea');
      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
      fld.cols = this.options.cols || 40;
    }
    fld.name = this.options.paramName;
    fld.value = text; // No HTML breaks conversion anymore
    fld.className = 'editor_field';
    if (this.options.submitOnBlur)
      fld.onblur = this._boundSubmitHandler;
    this._controls.editor = fld;
    if (this.options.loadTextURL)
      this.loadExternalText();
    this._form.appendChild(this._controls.editor);
  },
  createForm: function() {
    var ipe = this;
    function addText(mode, condition) {
      var text = ipe.options['text' + mode + 'Controls'];
      if (!text || condition === false) return;
      ipe._form.appendChild(document.createTextNode(text));
    };
    this._form = $(document.createElement('form'));
    this._form.id = this.options.formId;
    this._form.addClassName(this.options.formClassName);
    this._form.onsubmit = this._boundSubmitHandler;
    this.createEditField();
    if ('textarea' == this._controls.editor.tagName.toLowerCase())
      this._form.appendChild(document.createElement('br'));
    if (this.options.onFormCustomization)
      this.options.onFormCustomization(this, this._form);
    addText('Before', this.options.okControl || this.options.cancelControl);
    this.createControl('ok', this._boundSubmitHandler);
    addText('Between', this.options.okControl && this.options.cancelControl);
    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
    addText('After', this.options.okControl || this.options.cancelControl);
  },
  destroy: function() {
    if (this._oldInnerHTML)
      this.element.innerHTML = this._oldInnerHTML;
    this.leaveEditMode();
    this.unregisterListeners();
  },
  enterEditMode: function(e) {
    if (this._saving || this._editing) return;
    this._editing = true;
    this.triggerCallback('onEnterEditMode');
    if (this.options.externalControl)
      this.options.externalControl.hide();
    this.element.hide();
    this.createForm();
    this.element.parentNode.insertBefore(this._form, this.element);
    if (!this.options.loadTextURL)
      this.postProcessEditField();
    if (e) Event.stop(e);
  },
  enterHover: function(e) {
    if (this.options.hoverClassName)
      this.element.addClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onEnterHover');
  },
  getText: function() {
    return this.element.innerHTML.unescapeHTML();
  },
  handleAJAXFailure: function(transport) {
    this.triggerCallback('onFailure', transport);
    if (this._oldInnerHTML) {
      this.element.innerHTML = this._oldInnerHTML;
      this._oldInnerHTML = null;
    }
  },
  handleFormCancellation: function(e) {
    this.wrapUp();
    if (e) Event.stop(e);
  },
  handleFormSubmission: function(e) {
    var form = this._form;
    var value = $F(this._controls.editor);
    this.prepareSubmission();
    var params = this.options.callback(form, value) || '';
    if (Object.isString(params))
      params = params.toQueryParams();
    params.editorId = this.element.id;
    if (this.options.htmlResponse) {
      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Updater({ success: this.element }, this.url, options);
    } else {
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Request(this.url, options);
    }
    if (e) Event.stop(e);
  },
  leaveEditMode: function() {
    this.element.removeClassName(this.options.savingClassName);
    this.removeForm();
    this.leaveHover();
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
    if (this.options.externalControl)
      this.options.externalControl.show();
    this._saving = false;
    this._editing = false;
    this._oldInnerHTML = null;
    this.triggerCallback('onLeaveEditMode');
  },
  leaveHover: function(e) {
    if (this.options.hoverClassName)
      this.element.removeClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onLeaveHover');
  },
  loadExternalText: function() {
    this._form.addClassName(this.options.loadingClassName);
    this._controls.editor.disabled = true;
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._form.removeClassName(this.options.loadingClassName);
        var text = transport.responseText;
        if (this.options.stripLoadedTextTags)
          text = text.stripTags();
        this._controls.editor.value = text;
        this._controls.editor.disabled = false;
        this.postProcessEditField();
      }.bind(this),
      onFailure: this._boundFailureHandler
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },
  postProcessEditField: function() {
    var fpc = this.options.fieldPostCreation;
    if (fpc)
      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
  },
  prepareOptions: function() {
    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
      Object.extend(this.options, defs);
    }.bind(this));
  },
  prepareSubmission: function() {
    this._saving = true;
    this.removeForm();
    this.leaveHover();
    this.showSaving();
  },
  registerListeners: function() {
    this._listeners = { };
    var listener;
    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
      listener = this[pair.value].bind(this);
      this._listeners[pair.key] = listener;
      if (!this.options.externalControlOnly)
        this.element.observe(pair.key, listener);
      if (this.options.externalControl)
        this.options.externalControl.observe(pair.key, listener);
    }.bind(this));
  },
  removeForm: function() {
    if (!this._form) return;
    this._form.remove();
    this._form = null;
    this._controls = { };
  },
  showSaving: function() {
    this._oldInnerHTML = this.element.innerHTML;
    this.element.innerHTML = this.options.savingText;
    this.element.addClassName(this.options.savingClassName);
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
  },
  triggerCallback: function(cbName, arg) {
    if ('function' == typeof this.options[cbName]) {
      this.options[cbName](this, arg);
    }
  },
  unregisterListeners: function() {
    $H(this._listeners).each(function(pair) {
      if (!this.options.externalControlOnly)
        this.element.stopObserving(pair.key, pair.value);
      if (this.options.externalControl)
        this.options.externalControl.stopObserving(pair.key, pair.value);
    }.bind(this));
  },
  wrapUp: function(transport) {
    this.leaveEditMode();
    // Can't use triggerCallback due to backward compatibility: requires
    // binding + direct element
    this._boundComplete(transport, this.element);
  }
});

Object.extend(Ajax.InPlaceEditor.prototype, {
  dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
  initialize: function($super, element, url, options) {
    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
    $super(element, url, options);
  },

  createEditField: function() {
    var list = document.createElement('select');
    list.name = this.options.paramName;
    list.size = 1;
    this._controls.editor = list;
    this._collection = this.options.collection || [];
    if (this.options.loadCollectionURL)
      this.loadCollection();
    else
      this.checkForExternalText();
    this._form.appendChild(this._controls.editor);
  },

  loadCollection: function() {
    this._form.addClassName(this.options.loadingClassName);
    this.showLoadingText(this.options.loadingCollectionText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        var js = transport.responseText.strip();
        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
          throw('Server returned an invalid collection representation.');
        this._collection = eval(js);
        this.checkForExternalText();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadCollectionURL, options);
  },

  showLoadingText: function(text) {
    this._controls.editor.disabled = true;
    var tempOption = this._controls.editor.firstChild;
    if (!tempOption) {
      tempOption = document.createElement('option');
      tempOption.value = '';
      this._controls.editor.appendChild(tempOption);
      tempOption.selected = true;
    }
    tempOption.update((text || '').stripScripts().stripTags());
  },

  checkForExternalText: function() {
    this._text = this.getText();
    if (this.options.loadTextURL)
      this.loadExternalText();
    else
      this.buildOptionList();
  },

  loadExternalText: function() {
    this.showLoadingText(this.options.loadingText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._text = transport.responseText.strip();
        this.buildOptionList();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },

  buildOptionList: function() {
    this._form.removeClassName(this.options.loadingClassName);
    this._collection = this._collection.map(function(entry) {
      return 2 === entry.length ? entry : [entry, entry].flatten();
    });
    var marker = ('value' in this.options) ? this.options.value : this._text;
    var textFound = this._collection.any(function(entry) {
      return entry[0] == marker;
    }.bind(this));
    this._controls.editor.update('');
    var option;
    this._collection.each(function(entry, index) {
      option = document.createElement('option');
      option.value = entry[0];
      option.selected = textFound ? entry[0] == marker : 0 == index;
      option.appendChild(document.createTextNode(entry[1]));
      this._controls.editor.appendChild(option);
    }.bind(this));
    this._controls.editor.disabled = false;
    Field.scrollFreeActivate(this._controls.editor);
  }
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only  exists for a while,  in order to  let ****
//**** users adapt to  the new API.  Read up on the new ****
//**** API and convert your code to it ASAP!            ****

Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
  if (!options) return;
  function fallback(name, expr) {
    if (name in options || expr === undefined) return;
    options[name] = expr;
  };
  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
    options.cancelLink == options.cancelButton == false ? false : undefined)));
  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
    options.okLink == options.okButton == false ? false : undefined)));
  fallback('highlightColor', options.highlightcolor);
  fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
  DefaultOptions: {
    ajaxOptions: { },
    autoRows: 3,                                // Use when multi-line w/ rows == 1
    cancelControl: 'link',                      // 'link'|'button'|false
    cancelText: 'cancel',
    clickToEditText: 'Click to edit',
    externalControl: null,                      // id|elt
    externalControlOnly: false,
    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
    formClassName: 'inplaceeditor-form',
    formId: null,                               // id|elt
    highlightColor: '#ffff99',
    highlightEndColor: '#ffffff',
    hoverClassName: '',
    htmlResponse: true,
    loadingClassName: 'inplaceeditor-loading',
    loadingText: 'Loading...',
    okControl: 'button',                        // 'link'|'button'|false
    okText: 'ok',
    paramName: 'value',
    rows: 1,                                    // If 1 and multi-line, uses autoRows
    savingClassName: 'inplaceeditor-saving',
    savingText: 'Saving...',
    size: 0,
    stripLoadedTextTags: false,
    submitOnBlur: false,
    textAfterControls: '',
    textBeforeControls: '',
    textBetweenControls: ''
  },
  DefaultCallbacks: {
    callback: function(form) {
      return Form.serialize(form);
    },
    onComplete: function(transport, element) {
      // For backward compatibility, this one is bound to the IPE, and passes
      // the element directly.  It was too often customized, so we don't break it.
      new Effect.Highlight(element, {
        startcolor: this.options.highlightColor, keepBackgroundImage: true });
    },
    onEnterEditMode: null,
    onEnterHover: function(ipe) {
      ipe.element.style.backgroundColor = ipe.options.highlightColor;
      if (ipe._effect)
        ipe._effect.cancel();
    },
    onFailure: function(transport, ipe) {
      alert('Error communication with the server: ' + transport.responseText.stripTags());
    },
    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
    onLeaveEditMode: null,
    onLeaveHover: function(ipe) {
      ipe._effect = new Effect.Highlight(ipe.element, {
        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
        restorecolor: ipe._originalBackground, keepBackgroundImage: true
      });
    }
  },
  Listeners: {
    click: 'enterEditMode',
    keydown: 'checkForEscapeOrReturn',
    mouseover: 'enterHover',
    mouseout: 'leaveHover'
  }
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
  loadingCollectionText: 'Loading options...'
};

// Delayed observer, like Form.Element.Observer,
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create({
  initialize: function(element, delay, callback) {
    this.delay     = delay || 0.5;
    this.element   = $(element);
    this.callback  = callback;
    this.timer     = null;
    this.lastValue = $F(this.element);
    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
  },
  delayedListener: function(event) {
    if(this.lastValue == $F(this.element)) return;
    if(this.timer) clearTimeout(this.timer);
    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
    this.lastValue = $F(this.element);
  },
  onTimerEvent: function() {
    this.timer = null;
    this.callback(this.element, $F(this.element));
  }
});

// Adds element extensions for Prototype's dollar sign function.
Element.addMethods({
  // from http://elia.wordpress.com/2007/01/18/overflow-smooth-scroll-with-scriptaculous/ and http://pastie.org/36461 
  // also see Effect.Scroll below
  moveTo: function(container, element) {
    Position.prepare();
    container_y = Position.cumulativeOffset(container)[1]
    element_y = Position.cumulativeOffset($(element))[1]
    new Effect.Scroll(container, {x:0, y:(element_y-container_y)});
    return false;
  }
});

// Specify extension for Form elements
Form.Element.Methods.flushStaleValue = function(element) {
  element = $(element);
  element.value = element.readAttribute('value');
  return element;
}

Element.addMethods(); // Loads extensions

// modify/add functions for disable/enable of input/button tags. Adds/removes css 'disabled' class for use w/ sprites.
// (necessary because ie6 can't handle 'some-input[disabled]' css selectors)
var newDisableEnable = {
  disable: function(element) {
    element = $(element);
    element.disabled = true;
    element.addClassName('disabled');
    return element;
  },
  enable: function(element) {
    element = $(element);
    element.disabled = false;
    element.removeClassName('disabled');
    return element;
  }
};
Element.addMethods("INPUT", newDisableEnable);
Element.addMethods("BUTTON", newDisableEnable);

Event.observe(document, 'dom:loaded', function() { $$('input[type=text]').invoke('flushStaleValue'); });

// Prototype Hash class extensions
Hash.addMethods({
  findByValue: function(v) {
    var valueMatch = function(p) { return p.value == v; };
    return this.detect(valueMatch);
  },
  
  findKeyByValue: function(v) {
    var res = this.findByValue(v);
    return res ? res[0] : 'undefined';
  }
});

// Extensions to Numbers
Object.extend(Number.prototype, {
  // Seconds to a more readable format: 0:12 or something like that.
  toDuration: function() {
    var seconds = this + 0;
    h = parseInt(seconds / 3600);
    m = parseInt((seconds % 3600) / 60);
    s = parseInt(seconds % 60).toPaddedString(2);
    var resultString = '';
    resultString = resultString + (m + ':' + s);
    return (h > 0) ? (h + ':' + resultString) : resultString;
  },
  
  //add commas.  precision = number of fractional digits.
  withCommas: function(precision) {
    var text = this.toString();
    if (precision || precision == 0) {
      text = this.toFixed(precision);
    }
    var pieces = text.split('.');
    var piece1 = pieces[0];
    var piece2 = pieces.length > 1 ? '.' + pieces[1] : '';
    var regex = /(\d+)(\d{3})/;
    while (regex.test(piece1)) {
      piece1 = piece1.replace(regex, '$1' + ',' + '$2');
    }
    return piece1 + piece2;
  }
});

// Introduces Event delegation (http://icant.co.uk/sandbox/eventdelegation)
Object.extend(Event, (function(){
  return {
    delegate: function(element, eventName, targetSelector, handler) {
      var element = $(element);
      function createDelegation(_delegatedEvent) {
        var origin = _delegatedEvent.element();
        if ( origin.match(targetSelector) ){ return handler(_delegatedEvent); }
      }
      element.observe(eventName, createDelegation);
      return element;
    },
  
    delegators: function(element, eventName, rules) {
      var element = $(element);
      function delegateRule(rule) {
        element.delegate(eventName, rule.key, rule.value);
      }
      $H(rules).each(delegateRule);
      return element;
    }
  };
})());

Element.addMethods({
  delegate: Event.delegate,
  delegators: Event.delegators
});

PageActions = {
  // Easy way to reload
  refresh: function(event) {
    window.location.reload(true);
  }
}

$$('.refreshLink').invoke('observe', 'click', PageActions.refresh)

// My implementation of tooltips.
//
// Partly inspired by Cooltips (http://www.wildbit.com/labs/cooltips). My
// implementation differs in that instead of passing style options, it just
// adds the class name "helpHint" to tooltip elements, so they can be styled via CSS.
var HelpHint = Class.create({
  delay: 200, // Time to wait before display tooltip
  offset: 5, // Distance to offset tooltip from mouse pointer
  bindToMouse: true, // The tooltip element moves with the mouse
  elementCursor: 'pointer', // I think it's ugly to have the text selector for a tooltip.
  
  initialize: function(element, options) {
    this.on = false;
    this.options = options || { };
    Object.extend(this, this.options);
    this.element = $(element);
    this.text = this.element.readAttribute('title');
    if ( this.text == null || this.text.blank() ) { this.text = "<span class='nil'>(no information provided)</span>"; }
    this.setupHint();
    this.setupBehaviors();
    if ( this.elementCursor ) { this.element.setStyle({ cursor: this.elementCursor }); }
  },
   
  setupHint: function() {
    this.element.writeAttribute('title', '');
    this.element.addClassName('hasHint');
    this.tip = new Element('div', { 'class': 'helpHint', 'style': 'display:none' });
    this.tip.update(this.text);
    $(document.body).insert({ top:this.tip });
    this.tip.absolutize();
  },
  
  setupBehaviors: function() {
    this.behaviors = { };
    this.behaviors['show'] = this.show.bind(this);
    this.behaviors['hide'] = this.hide.bind(this);
    this.behaviors['move'] = this.move.bind(this);
    this.behaviors['fade'] = this.fade.bind(this);
    this.behaviors['appear'] = this.appear.bind(this);
    this.behaviors['observeMove'] = this.observeMove.bind(this);
    this.element.observe('mouseover', this.behaviors['show']);
    this.element.observe('mouseout', this.behaviors['hide']);
  },
  
  killBehaviors: function() {
    this.element.stopObserving(this.behaviors['show']);
    this.element.stopObserving(this.behaviors['hide']);
    this.element.stopObserving(this.behaviors['move']);
  },
  
  appear: function() {
    this.appearFX = new Effect.Appear(this.tip, { duration: 0.2 });
    this.on = true;
  },
  
  fade: function() {
    this.tip.fade({ duration: 0.2 });
  },
  
  show: function(event) {
    if (!this.on) {
      this.behaviors['observeMove'](true);
      var pointer = event.pointer();
      this.tip.setStyle({
        top: (pointer.y + this.offset) + 'px',
        left: (pointer.x + this.offset) + 'px'
      });
      
      this.timeout = window.setTimeout(this.behaviors['appear'], this.delay);
    }
  },
  
  hide: function(event) {
    if ( this.on ) {
      this.appearFX.cancel();
      this.behaviors['observeMove'](false);
      this.behaviors['fade']();
    }
    
    HelpHint._clearTimeout(this.timeout);
    this.on = false;
  },
  
  observeMove: function(shouldObserve) {
    if (!this.bindToMouse) { return this.observeMove = Prototype.K; }
    if (shouldObserve) { this.element.observe('mousemove', this.behaviors['move']); }
    else { this.element.stopObserving('mousemove', this.behaviors['move']); }
  },
  
  move: function(event) {
    var pointer = event.pointer();
    this.tip.setStyle({
      top: (pointer.y + this.offset) + 'px',
      left: (pointer.x + this.offset) + 'px'
    });
  }
});

Object.extend(HelpHint, {
  // This lets me curry the options as I iterate over elements to add
  // in Element#tipSection()
  add: function(options, element) {
    return element.makeToolTip(options);
  },
  
  _clearTimeout: function(timer) {
		clearTimeout(timer);
		clearInterval(timer);
		return null;
	}
});

Element.addMethods({
  // Adds tooltip behavior to the element.
  makeToolTip: function(element, options) {
    element = $(element);
    options = options || { };
    new HelpHint(element, options);
    return element;
  },
  
  // Useful if you have an element that contains a collection of elements
  // with tooltips.
  tipSection: function(element, options) {
    var options = options || { };
    var element = $(element);
    var targets = element.descendants().select(function(e) { return e.hasAttribute('title'); });
    targets.each(HelpHint.add.curry(options));
    return element;
  }
});

HelpHint.setup = function(element) { new HelpHint(element, { delay: 0, offset: 7 }) };

// from http://elia.wordpress.com/2007/01/18/overflow-smooth-scroll-with-scriptaculous/ and http://pastie.org/36461 
Effect.Scroll = Class.create();
Object.extend(Object.extend(Effect.Scroll.prototype, Effect.Base.prototype), {
  initialize: function(element) {
    this.element = $(element);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'absolute'
    } , arguments[1] || {}  );
    this.start(options);
  },
  setup: function() {
    if (this.options.continuous && !this.element._ext ) {
      this.element.cleanWhitespace();
      this.element._ext=true;
      this.element.appendChild(this.element.firstChild);
    }

    this.originalLeft=this.element.scrollLeft;
    this.originalTop=this.element.scrollTop;

    if(this.options.mode == 'absolute') {
      this.options.x -= this.originalLeft;
      this.options.y -= this.originalTop;
    } else {

    }
  },
  update: function(position) {   
    this.element.scrollLeft = this.options.x * position + this.originalLeft;
    this.element.scrollTop  = this.options.y * position + this.originalTop;
  }
});


// Creates an audio player on the page.
var AudioPlayer = Class.create({

  // optional flashvarParams: file, animoto_mode, duration, start
  initialize: function(playerId, environment, playerSwf, flashvarParams) {
    flashvarParams = flashvarParams || {};

    this.playerId = playerId;

    var width = 240;
    var height = 60;

    var flashvars = {type:         'sound',
                     environment:  environment,
                     file:         flashvarParams.file,
                     duration:     flashvarParams.duration,
                     animoto_mode: flashvarParams.animoto_mode,
                     start:        flashvarParams.start,
                     javascriptid: this.playerId,
                     id:           this.playerId,
                     width:        width,
                     height:       height};

    var params = {wmode:             'transparent',
                  allowFullScreen:   'false',
                  allowscriptaccess: 'always',
                  allowNetworking:   'all',
                  bgcolor:           '#000000'};

    swfobject.embedSWF(playerSwf, this.playerId, width, height, '9.0.115', null, flashvars, params);
  },

  swf: function() {return jQuery('#' + this.playerId).get(0);},

  load: function(file, okey, autostart) {
    autostart = autostart || false;
    Animoto.info('calling this.swf().sendEvent("LOAD", {file: ' + file + ', autostart: ' + autostart + '});');
    this.swf().sendEvent("LOAD", {file: file, autostart: autostart});
    this.showInfo(okey);
  },

  // Loads the song info in the song info panel. Duh.
  showInfo: function(okey) {
    jQuery('.panelBlue_4x7, .inset_4x7_16short').hide();
    jQuery('#song_info').show().empty();
    jQuery('#indicator_songInfo').show();
    var path = '/songs/info/' + okey;
    new Ajax.Request(path, {
      method: 'get',
      onSuccess: function(transport){
        jQuery('#song_info').show().html(transport.responseText);
      },
      onComplete: function() {
        jQuery('#indicator_songInfo').hide();
      },
      on503: function() {
        jQuery('.panelBlue_4x7, .inset_4x7_16short').show();
        jQuery('#song_info').empty();
      },
      onFailure: function() {
        jQuery('.panelBlue_4x7, .inset_4x7_16short').show();
        AnimotoFramework.showFlashMessage('Whoops', 'There was an error loading this song.  Please try again--and if the problem persists please let us know through the feedback button.');
      }
    })
  }
});


var Animoto = { // a namespace for Animoto stuff
  // wraps google analytics so that it doesn't mess other stuff up if it fails for some reason 
  // (e.g. if google analytics is explicitly blocked by end-user via firewall, browser plugin, etc)
  track: function(path) {
    try {
      if (typeof(pageTracker._trackPageview) != 'undefined') {
        pageTracker._trackPageview(path);
      }
    } catch(error) {}
  },
  ellipsis: function(string, length) {
    if (string.length <= length) {
      return string;
    }
    return string.substring(0,length-1) + "&hellip;";
  },
  info: function(message) {
    try {
      if (typeof(console) != 'undefined' && console.info) {
        console.info(message);
      }
    } catch (error) {}
  },
  error: function(message) {
    try {
      if (typeof(console) != 'undefined' && console.error) {
        console.error(message);
      }
      new Ajax.Request('/javascript_errors', {
        method: 'post',
        parameters: {message: message, url: window.location.toString()}
      });
    } catch (error) {
      Animoto.info('logging error: '+error);
    }
  },
  // human-readable flash version
  flashVersionString: function() {
    var version = swfobject.getFlashPlayerVersion();
    return version.major + '-' + version.minor + '-' + version.release;
  }
};

//////////////////////////////////////////////////////////////////////////////
//                            animoto UI helpers                           //
//                      (c) 2007 Animoto Productions                      //
///////////////////////////////////////////////////////////////////////////

Object.extend(Animoto, {
  UI: {
    createExternalLink: function(element) {
      var element = $(element);
      element.writeAttribute('target', '_blank');
      element.writeAttribute('title', "Open “" + element.innerHTML + "” in a new window.");
      return element;
    }
  }
});

Event.observe(document, 'dom:loaded', function(){ $$('a.external').each(Animoto.UI.createExternalLink); });

var Video = {};

//////////////////////////////////////////////////////////////////////////////
//                    animoto cover picker controls                        //
//                    (c) 2008 Animoto Productions                        //
///////////////////////////////////////////////////////////////////////////
// For Commercial users on the project finalize page.
var CoverPicker = {
  init: function(container, okey_input, type_input, cover_thumbnails) {
    CoverPicker.container  = container;
    CoverPicker.okey_input = okey_input;
    CoverPicker.type_input = type_input;

    CoverPicker.greenScreen = {okey: null, type: null, url: '/images/default.gif'}
    CoverPicker.thumbnails = [CoverPicker.greenScreen].concat(cover_thumbnails);

    CoverPicker.activeImage = container.find('.activeImage');
    CoverPicker.prevImage   = container.find('.prevImage').click(CoverPicker.clickPrev);
    CoverPicker.nextImage   = container.find('.nextImage').click(CoverPicker.clickNext);
    CoverPicker.links       = container.find('a');

    CoverPicker.setActive(cover_thumbnails.length > 1 ? 1 : 0);
  },

  setActive: function(i) {
    CoverPicker.currentIndex = i;
    CoverPicker.links.removeClass('blank')
    CoverPicker.prev   = CoverPicker.thumbnails[i-1];
    CoverPicker.active = CoverPicker.thumbnails[ i ];
    CoverPicker.next   = CoverPicker.thumbnails[i+1];
    CoverPicker.updateForm();
    CoverPicker.updateThumbnails();
  },

  updateForm: function() {
    // ie converts `null` to "null" instead of "" (like ff/safari), thus: ... || ''
    CoverPicker.okey_input.val(CoverPicker.active.okey || '');
    CoverPicker.type_input.val(CoverPicker.active.type || '');
  },

  updateThumbnails: function() {
    CoverPicker.activeImage.css('background-image', 'url(' + CoverPicker.active.url + ')');
    if (CoverPicker.prev) {
      CoverPicker.prevImage.css('background-image', 'url(' + CoverPicker.prev.url + ')');
    }
    if (CoverPicker.next) {
      CoverPicker.nextImage.css('background-image', 'url(' + CoverPicker.next.url + ')');
    }
  },

  clickNext: function(e) {
    var n = e.shiftKey ? 10 : 1;
    var i = CoverPicker.currentIndex + n;
    if (i < CoverPicker.thumbnails.length) {
      CoverPicker.setActive(i);
    } else if (n == 10) {
      CoverPicker.setActive(CoverPicker.thumbnails.length - 1);
    }
    if ((i + 1) >= CoverPicker.thumbnails.length) {
      CoverPicker.nextImage.addClass('blank');
    }
    return false;
  },

  clickPrev: function(e) {
    var n = e.shiftKey ? 10 : 1;
    var i = CoverPicker.currentIndex - n;
    if (i >= 0) {
      CoverPicker.setActive(i);
    } else if (n == 10) {
      CoverPicker.setActive(0);
    }
    if ((i - 1) < 0) {
      CoverPicker.prevImage.addClass('blank');
    }
    return false;
  }
};

// For minimal cover picker used for Greetings
var CoverPicker2 = {
  init: function(container, okey_input, type_input, cover_thumbnails) {
    
    CoverPicker2.container  = container;
    CoverPicker2.okey_input = okey_input;
    CoverPicker2.type_input = type_input;
    CoverPicker2.greenScreen = {okey: null, type: null, url: '/images/default.gif'}
    CoverPicker2.thumbnails = [CoverPicker2.greenScreen].concat(cover_thumbnails);
    CoverPicker2.image  = container.find('img');
    CoverPicker2.prevImage   = container.find('.prevImage').click(CoverPicker2.clickPrev);
    CoverPicker2.nextImage   = container.find('.nextImage').click(CoverPicker2.clickNext);
    CoverPicker2.setActive(cover_thumbnails.length > 1 ? 1 : 0);
    
    CoverPicker2.container.hover(function(){
      container.find('.handle').animate({opacity:0.6})
    }, function(){
      container.find('.handle').animate({opacity:0.15})
    });
    
  },
  
  setActive: function(i) {
    CoverPicker2.currentIndex = i;
    CoverPicker2.prev   = CoverPicker2.thumbnails[i-1];
    CoverPicker2.active = CoverPicker2.thumbnails[ i ];
    CoverPicker2.next   = CoverPicker2.thumbnails[i+1];
    CoverPicker2.updateForm();
    CoverPicker2.updateThumbnails();
  },

  updateForm: function() {
    // ie converts `null` to "null" instead of "" (like ff/safari), thus: ... || ''
    CoverPicker2.okey_input.val(CoverPicker2.active.okey || '');
    CoverPicker2.type_input.val(CoverPicker2.active.type || '');
  },

  updateThumbnails: function() {
    CoverPicker2.image.attr('src', CoverPicker2.active.url)
  },

  clickNext: function(e) {
    var n = e.shiftKey ? 10 : 1;
    var i = CoverPicker2.currentIndex + n;
    if (i < CoverPicker2.thumbnails.length) {
      CoverPicker2.setActive(i);
    } else if (n == 10) {
      CoverPicker2.setActive(CoverPicker2.thumbnails.length - 1);
    }
    return false;
  },

  clickPrev: function(e) {
    var n = e.shiftKey ? 10 : 1;
    var i = CoverPicker2.currentIndex - n;
    if (i >= 0) {
      CoverPicker2.setActive(i);
    } else if (n == 10) {
      CoverPicker2.setActive(0);
    }
    return false;
  }
};

//////////////////////////////////////////////////////////////////////////////
//                              hash watcher                               //
//                         (c) 2007 Pat Nakajima                          //
///////////////////////////////////////////////////////////////////////////
(function() {
  var HashWatcher = {
    CURRENT: null, INTERVAL: 0.2,

    check: function(pe) {
      var hash = window.location.hash;
      if (HashWatcher.CURRENT != hash) {
        document.fire('hash:changed', { current: hash, old: HashWatcher.CURRENT });
        HashWatcher.CURRENT = hash;
      }
    }
  };

  new PeriodicalExecuter(HashWatcher.check, HashWatcher.INTERVAL);
}).defer();

function goTo(location) {  window.location = location;  }

function toggleOn(objectID) {
  var object = $(objectID);
  if (object) {
    if(object.style.display == 'block') {
      object.style.display = 'none';
      return false;
    } else {
      object.style.display = 'block';
      return true;
    }
  }
}

// Switches on or off the answer to a FAQ question and scrolls window
function toggleTip(link) {
  var link = $(link);
  var children = $(link.parentNode).select('.tip_moreText');

  if(toggleOn(children[0]))
    link.innerHTML = "<&nbsp;less"
  else
    link.innerHTML = "more&nbsp;>"
}

function turnOnPanelBlue(panel, doc_title) {
  jQuery(".panelBlue_4x7").hide();
  jQuery(".rails_flash_4x7").hide();
  
  jQuery("#panelBlue_" + panel).show();
  new Ajax.Updater(panel + "_text", "/help/tip/" + doc_title, {
    asynchronous: true,
    evalScripts:true,
    method:'get',
    onComplete:function(request){
      jQuery('#' + panel + "_indicator").hide();
    }
  });
}

var AnimotoFramework = function(){
  return{
      
    handleFlashMessaging: function(){
      $$('#header_flash .controls')[0].observe('click',function(){
        AnimotoFramework.hideFlashMessage();
      });
      if($$('#header_flash .flash')[0].innerHTML != ""){
        $('header_flash').show();
        $('header_flash').morph("top:126px",{duration:0.650});
      }
    },
      
    showFlashMessage: function(heading, message){
      var flash = $$('#header_flash .flash')[0];
      flash.update(new Element('p').update(heading));

      if (message) {
        flash.insert(new Element('p', {"class": "secondary"}).update(message));
      }

      $('header_flash').show();
      $('header_flash').morph("top:126px",{duration:0.650});
    },

    hideFlashMessage: function(){
      $('header_flash').morph("top:-126px",{
        duration:0.650,
        afterFinish: function(){$('header_flash').hide()}
      });
    }
  }
}();

document.observe("dom:loaded", function() {
  AnimotoFramework.handleFlashMessaging();
});


// FORM VALIDATION

function disableFormElement(element_id) {
  elt = $(element_id)
  elt.disabled = true;
  elt.removeClassName('inputEnabled');
  elt.addClassName('inputDisabled');
}

// Highlights focused fields and form_validation_sections while filling out forms
function prep_form(form) {
  aElements = Form.getElements(form);

  aElements.each(function(field) {
    // add onfocus handler
    field.onfocus = function() {
      if(field.type != "radio")
        field.addClassName('form_field_focused')

      // form validation sections: highlight as needed
      current_section = getParentElementByClassName(field, 'form_validation_section');
      sections = $$('.form_validation_section');
      sections.each(function(section) {
        if (current_section == section) { section.addClassName('form_section_focused'); }
        else { section.removeClassName('form_section_focused'); }
      });
    }

    // add onblur handler
    field.onblur = function() {  field.removeClassName('form_field_focused')  }
  });
}

function isSubmitEvent(event) {
  if(event && event.keyCode != 13) return false;
  return true;
}

function isTabEvent(event) {
  if(event && event.keyCode != 9) return false;
  return true;
}

function submit_form_without_check(form,event) {
  if(!isSubmitEvent(event)) return false;
  form.submit();
  return true;
}

function onsubmit_form_without_check(form,event) {
  if(!isSubmitEvent(event)) return false;
  form.onsubmit();
  return true;
}

// the name is a little misleading because it also validates...change at some point
function submit_form(form, event) {
  return check_and_submit_form(form,null,event,false);
}

// use onsubmit() here because submit() can't be used with Ajax...
function onsubmit_form(form, event) {
  check_and_submit_form(form,null,event,true);
}

function confirm_form(form, message, event) {
  check_and_submit_form(form,message,event,false);
}

function check_and_submit_form(form,message,event,use_onsubmit) {
  // checks if the keystroke is enter; otherwise disregards
  if(!isSubmitEvent(event)) {
    return false;
  }

  // check form validation (and flag invalid fields)
  if(validate_form(form)) {
    // use confirm dialog if message passed in
    if(message && message != "" && !confirm(message)) {
      return false;
    }

    // use onsubmit() because submit() can't be used with Ajax...
    if(use_onsubmit)  {
      form.onsubmit();
    } else {
      form.submit();
    }
    return true;
  }

  return false;
}

function validate_form(form) {
  aElements = Form.getElements(form);

  formValid = true;
  aElements.each(function(elt) {
    if(!validate_field(elt)) formValid = false;

    // sneaky: attach an onchange handler to grab all further field changes
    elt.onchange = function() { validate_section(this) }
  });

  if(!formValid) {
    AnimotoFramework.showFlashMessage('Whoops', 'There were errors in the form; please enter/correct the fields in red and resubmit.');
    $$('#notifier_saving').invoke('addClassName', 'off');
    first_elt = Form.findFirstElement(form);
    first_elt.focus();

    // if form_validation_section of first element is invalid, make sure to show it
    section_elt = getParentElementByClassName(first_elt,'form_validation_section');
    if(section_elt.hasClassName('form_section_invalid'))
      section_elt.removeClassName('form_section_focused')

  } else {
    // if no more errors, hide flash error message
    AnimotoFramework.hideFlashMessage();
  }
  return formValid;
}

// validates all fields within the given field's section
function validate_section(field) {
  section_elt = getParentElementByClassName(field, 'form_validation_section');
  aElements = $A(section_elt.getElementsByTagName('input'))
  aElements = aElements.concat($A(section_elt.getElementsByTagName('select')))

  aElements.each(function(elt) { validate_field(elt); });
}

function validate_field(field) {
  // check matching password fields even if optional_field (for pages like account.rhtml)
  if (field.type == "password") {
    if(!validate_password(field)) return flag_invalid(field);
  }

  //ignore image submit buttons
  if (field.type == 'image') {
    return true;
  }

  // ignores if field is hidden or has class 'optional_field'
  if(field.hasClassName("optional_field") || field.type == "hidden") return true;

  // checks presence of a value
  if(!validate_present(field)) return flag_invalid(field);

  if (field.type == "radio") {
	if(field.id == "user_gender_is_male_true" || field.id == "user_gender_is_male_false"){
		// somewhat hacky but as new signup is coming
		return validate_radio($('user_gender_is_male_true')) ? flag_valid($('user_gender_is_male_true')) : flag_invalid($('user_gender_is_male_true'));
	} else{
    	return validate_radio(field) ? flag_valid(field) : flag_invalid(field);
	}
  } else if (field.id.match("emails")) {
    return validate_email_list(field.value) ? flag_valid(field) : flag_invalid(field);
  } else if (field.id.match("email")) {
    return validate_email(field.value) ? flag_valid(field) : flag_invalid(field);
  } else if (field.id.match("accept")) {
    return validate_accept(field) ? flag_valid(field) : flag_invalid(field);
  } else if (field.type == "password") {    // no longer need to check passwords here; done above
    return validate_password(field);
  } else if (field.id.match("_1i") || field.id.match("_2i") || field.id.match("_3i")) {
    return validate_date_segment(field) ? flag_valid(field) : flag_invalid(field);
  }

  flag_valid(field);
  return true;
}

// ensures that a field's value is non-null and not ""
function validate_present(field) {
  return (field.value != null && field.value != "");
}

// ensures that the email is of an acceptable format (allows whitespace on either side)
function validate_email(email) {
  // from: http://www.regular-expressions.info/email.html (mix & match from that page)
  var user = '[a-z0-9!#$%&\'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&\'*+/=?^_`{|}~-]+)*';
  var subdomain = '(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+';
  var tld = '[a-z]{2,4}';
  var regex = new RegExp('^\\s*' + user + '@' + subdomain + tld + '\\s*$', 'i');
  return regex.test(email);
}

// ensures format of a list of emails separated by a comma or semi-colon
function validate_email_list(email_list) {
  email_list = email_list.replace(/,/g, ";")  // first replace all commas with semi-colons,
  email_array = email_list.split(";")         //  then split on semi-colons

  for(i=0; i<email_array.length; i++) {
    if(!isBlank(email_array[i]) && !validate_email(email_array[i])) return false;
  }
  return true;
}

function validate_accept(field) {
  return field.checked;
}

// ensures that at least one radio button per set is ticked
function validate_radio(field) {
  aElements = document.getElementsByName(field.name);
  // can't use Prototype's 'each' function, which is a real shame
  for(i=0;i<aElements.length;i++) {
    if(aElements[i].checked){
      return true;
	} else{
	}
  }
  return false;
}

// ensures that all password fields in the same validation section match (e.g. password and verify_password)
function validate_password(field) {
  section_elt = getParentElementByClassName(field, 'form_validation_section');
  aElements = $A(section_elt.getElementsByTagName('input'))     // $A() converts to an Array

  password = null;
  passwords_match = true;

  aElements.each(function(elt) {
    if(elt.type == "password") {
      if(!password) password = elt.value;
      else if(password != elt.value) passwords_match = false;
    }
  });

  aElements.each(function(elt) {
    if(elt.type == "password") passwords_match ? flag_valid(elt) : flag_invalid(elt);
  });
  return passwords_match;
}


// ensures that all segments of a tri-part date selector are valid
function validate_date_segment(field) {
  base_id = field.id.slice(0,field.id.length - 2);
  return validate_present($(base_id + '1i')) &&
         validate_present($(base_id + '2i')) &&
         validate_present($(base_id + '3i'));
}

// returns true if text is null, empty, or entirely made of white space
function isBlank(text){
  if(text == null) return true;
  return /^\s*$/.test(text);
}

function flag_invalid(field) {
  section_elt = getParentElementByClassName(field,'form_validation_section');
  if(section_elt) section_elt.addClassName('form_section_invalid');
  return false;
}

function flag_valid(field) {
  section_elt = getParentElementByClassName(field,'form_validation_section');
  if(section_elt) section_elt.removeClassName('form_section_invalid');
  return true;
}

function getParentElementByClassName(element,class_name) {
  // stupid IE doesn't extend HTMLElement so we've got to encapsulate parentNode is the
  //  dollar notation; see: http://www.prototypejs.org/learn/extensions
  if(element.parentNode && $(element.parentNode).hasClassName) {
    if($(element.parentNode).hasClassName(class_name)) return element.parentNode;
    return getParentElementByClassName(element.parentNode,class_name);
  }
  return null;
}



/* SWFObject v2.1 <http://code.google.com/p/swfobject/>
	Copyright (c) 2007-2008 Geoff Stearns, Michael Williams, and Bobby van der Sluis
	This software is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
var swfobject=function(){var b="undefined",Q="object",n="Shockwave Flash",p="ShockwaveFlash.ShockwaveFlash",P="application/x-shockwave-flash",m="SWFObjectExprInst",j=window,K=document,T=navigator,o=[],N=[],i=[],d=[],J,Z=null,M=null,l=null,e=false,A=false;var h=function(){var v=typeof K.getElementById!=b&&typeof K.getElementsByTagName!=b&&typeof K.createElement!=b,AC=[0,0,0],x=null;if(typeof T.plugins!=b&&typeof T.plugins[n]==Q){x=T.plugins[n].description;if(x&&!(typeof T.mimeTypes!=b&&T.mimeTypes[P]&&!T.mimeTypes[P].enabledPlugin)){x=x.replace(/^.*\s+(\S+\s+\S+$)/,"$1");AC[0]=parseInt(x.replace(/^(.*)\..*$/,"$1"),10);AC[1]=parseInt(x.replace(/^.*\.(.*)\s.*$/,"$1"),10);AC[2]=/r/.test(x)?parseInt(x.replace(/^.*r(.*)$/,"$1"),10):0}}else{if(typeof j.ActiveXObject!=b){var y=null,AB=false;try{y=new ActiveXObject(p+".7")}catch(t){try{y=new ActiveXObject(p+".6");AC=[6,0,21];y.AllowScriptAccess="always"}catch(t){if(AC[0]==6){AB=true}}if(!AB){try{y=new ActiveXObject(p)}catch(t){}}}if(!AB&&y){try{x=y.GetVariable("$version");if(x){x=x.split(" ")[1].split(",");AC=[parseInt(x[0],10),parseInt(x[1],10),parseInt(x[2],10)]}}catch(t){}}}}var AD=T.userAgent.toLowerCase(),r=T.platform.toLowerCase(),AA=/webkit/.test(AD)?parseFloat(AD.replace(/^.*webkit\/(\d+(\.\d+)?).*$/,"$1")):false,q=false,z=r?/win/.test(r):/win/.test(AD),w=r?/mac/.test(r):/mac/.test(AD);/*@cc_on q=true;@if(@_win32)z=true;@elif(@_mac)w=true;@end@*/return{w3cdom:v,pv:AC,webkit:AA,ie:q,win:z,mac:w}}();var L=function(){if(!h.w3cdom){return }f(H);if(h.ie&&h.win){try{K.write("<script id=__ie_ondomload defer=true src=//:><\/script>");J=C("__ie_ondomload");if(J){I(J,"onreadystatechange",S)}}catch(q){}}if(h.webkit&&typeof K.readyState!=b){Z=setInterval(function(){if(/loaded|complete/.test(K.readyState)){E()}},10)}if(typeof K.addEventListener!=b){K.addEventListener("DOMContentLoaded",E,null)}R(E)}();function S(){if(J.readyState=="complete"){J.parentNode.removeChild(J);E()}}function E(){if(e){return }if(h.ie&&h.win){var v=a("span");try{var u=K.getElementsByTagName("body")[0].appendChild(v);u.parentNode.removeChild(u)}catch(w){return }}e=true;if(Z){clearInterval(Z);Z=null}var q=o.length;for(var r=0;r<q;r++){o[r]()}}function f(q){if(e){q()}else{o[o.length]=q}}function R(r){if(typeof j.addEventListener!=b){j.addEventListener("load",r,false)}else{if(typeof K.addEventListener!=b){K.addEventListener("load",r,false)}else{if(typeof j.attachEvent!=b){I(j,"onload",r)}else{if(typeof j.onload=="function"){var q=j.onload;j.onload=function(){q();r()}}else{j.onload=r}}}}}function H(){var t=N.length;for(var q=0;q<t;q++){var u=N[q].id;if(h.pv[0]>0){var r=C(u);if(r){N[q].width=r.getAttribute("width")?r.getAttribute("width"):"0";N[q].height=r.getAttribute("height")?r.getAttribute("height"):"0";if(c(N[q].swfVersion)){if(h.webkit&&h.webkit<312){Y(r)}W(u,true)}else{if(N[q].expressInstall&&!A&&c("6.0.65")&&(h.win||h.mac)){k(N[q])}else{O(r)}}}}else{W(u,true)}}}function Y(t){var q=t.getElementsByTagName(Q)[0];if(q){var w=a("embed"),y=q.attributes;if(y){var v=y.length;for(var u=0;u<v;u++){if(y[u].nodeName=="DATA"){w.setAttribute("src",y[u].nodeValue)}else{w.setAttribute(y[u].nodeName,y[u].nodeValue)}}}var x=q.childNodes;if(x){var z=x.length;for(var r=0;r<z;r++){if(x[r].nodeType==1&&x[r].nodeName=="PARAM"){w.setAttribute(x[r].getAttribute("name"),x[r].getAttribute("value"))}}}t.parentNode.replaceChild(w,t)}}function k(w){A=true;var u=C(w.id);if(u){if(w.altContentId){var y=C(w.altContentId);if(y){M=y;l=w.altContentId}}else{M=G(u)}if(!(/%$/.test(w.width))&&parseInt(w.width,10)<310){w.width="310"}if(!(/%$/.test(w.height))&&parseInt(w.height,10)<137){w.height="137"}K.title=K.title.slice(0,47)+" - Flash Player Installation";var z=h.ie&&h.win?"ActiveX":"PlugIn",q=K.title,r="MMredirectURL="+j.location+"&MMplayerType="+z+"&MMdoctitle="+q,x=w.id;if(h.ie&&h.win&&u.readyState!=4){var t=a("div");x+="SWFObjectNew";t.setAttribute("id",x);u.parentNode.insertBefore(t,u);u.style.display="none";var v=function(){u.parentNode.removeChild(u)};I(j,"onload",v)}U({data:w.expressInstall,id:m,width:w.width,height:w.height},{flashvars:r},x)}}function O(t){if(h.ie&&h.win&&t.readyState!=4){var r=a("div");t.parentNode.insertBefore(r,t);r.parentNode.replaceChild(G(t),r);t.style.display="none";var q=function(){t.parentNode.removeChild(t)};I(j,"onload",q)}else{t.parentNode.replaceChild(G(t),t)}}function G(v){var u=a("div");if(h.win&&h.ie){u.innerHTML=v.innerHTML}else{var r=v.getElementsByTagName(Q)[0];if(r){var w=r.childNodes;if(w){var q=w.length;for(var t=0;t<q;t++){if(!(w[t].nodeType==1&&w[t].nodeName=="PARAM")&&!(w[t].nodeType==8)){u.appendChild(w[t].cloneNode(true))}}}}}return u}function U(AG,AE,t){var q,v=C(t);if(v){if(typeof AG.id==b){AG.id=t}if(h.ie&&h.win){var AF="";for(var AB in AG){if(AG[AB]!=Object.prototype[AB]){if(AB.toLowerCase()=="data"){AE.movie=AG[AB]}else{if(AB.toLowerCase()=="styleclass"){AF+=' class="'+AG[AB]+'"'}else{if(AB.toLowerCase()!="classid"){AF+=" "+AB+'="'+AG[AB]+'"'}}}}}var AD="";for(var AA in AE){if(AE[AA]!=Object.prototype[AA]){AD+='<param name="'+AA+'" value="'+AE[AA]+'" />'}}v.outerHTML='<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"'+AF+">"+AD+"</object>";i[i.length]=AG.id;q=C(AG.id)}else{if(h.webkit&&h.webkit<312){var AC=a("embed");AC.setAttribute("type",P);for(var z in AG){if(AG[z]!=Object.prototype[z]){if(z.toLowerCase()=="data"){AC.setAttribute("src",AG[z])}else{if(z.toLowerCase()=="styleclass"){AC.setAttribute("class",AG[z])}else{if(z.toLowerCase()!="classid"){AC.setAttribute(z,AG[z])}}}}}for(var y in AE){if(AE[y]!=Object.prototype[y]){if(y.toLowerCase()!="movie"){AC.setAttribute(y,AE[y])}}}v.parentNode.replaceChild(AC,v);q=AC}else{var u=a(Q);u.setAttribute("type",P);for(var x in AG){if(AG[x]!=Object.prototype[x]){if(x.toLowerCase()=="styleclass"){u.setAttribute("class",AG[x])}else{if(x.toLowerCase()!="classid"){u.setAttribute(x,AG[x])}}}}for(var w in AE){if(AE[w]!=Object.prototype[w]&&w.toLowerCase()!="movie"){F(u,w,AE[w])}}v.parentNode.replaceChild(u,v);q=u}}}return q}function F(t,q,r){var u=a("param");u.setAttribute("name",q);u.setAttribute("value",r);t.appendChild(u)}function X(r){var q=C(r);if(q&&(q.nodeName=="OBJECT"||q.nodeName=="EMBED")){if(h.ie&&h.win){if(q.readyState==4){B(r)}else{j.attachEvent("onload",function(){B(r)})}}else{q.parentNode.removeChild(q)}}}function B(t){var r=C(t);if(r){for(var q in r){if(typeof r[q]=="function"){r[q]=null}}r.parentNode.removeChild(r)}}function C(t){var q=null;try{q=K.getElementById(t)}catch(r){}return q}function a(q){return K.createElement(q)}function I(t,q,r){t.attachEvent(q,r);d[d.length]=[t,q,r]}function c(t){var r=h.pv,q=t.split(".");q[0]=parseInt(q[0],10);q[1]=parseInt(q[1],10)||0;q[2]=parseInt(q[2],10)||0;return(r[0]>q[0]||(r[0]==q[0]&&r[1]>q[1])||(r[0]==q[0]&&r[1]==q[1]&&r[2]>=q[2]))?true:false}function V(v,r){if(h.ie&&h.mac){return }var u=K.getElementsByTagName("head")[0],t=a("style");t.setAttribute("type","text/css");t.setAttribute("media","screen");if(!(h.ie&&h.win)&&typeof K.createTextNode!=b){t.appendChild(K.createTextNode(v+" {"+r+"}"))}u.appendChild(t);if(h.ie&&h.win&&typeof K.styleSheets!=b&&K.styleSheets.length>0){var q=K.styleSheets[K.styleSheets.length-1];if(typeof q.addRule==Q){q.addRule(v,r)}}}function W(t,q){var r=q?"visible":"hidden";if(e&&C(t)){C(t).style.visibility=r}else{V("#"+t,"visibility:"+r)}}function g(s){var r=/[\\\"<>\.;]/;var q=r.exec(s)!=null;return q?encodeURIComponent(s):s}var D=function(){if(h.ie&&h.win){window.attachEvent("onunload",function(){var w=d.length;for(var v=0;v<w;v++){d[v][0].detachEvent(d[v][1],d[v][2])}var t=i.length;for(var u=0;u<t;u++){X(i[u])}for(var r in h){h[r]=null}h=null;for(var q in swfobject){swfobject[q]=null}swfobject=null})}}();return{registerObject:function(u,q,t){if(!h.w3cdom||!u||!q){return }var r={};r.id=u;r.swfVersion=q;r.expressInstall=t?t:false;N[N.length]=r;W(u,false)},getObjectById:function(v){var q=null;if(h.w3cdom){var t=C(v);if(t){var u=t.getElementsByTagName(Q)[0];if(!u||(u&&typeof t.SetVariable!=b)){q=t}else{if(typeof u.SetVariable!=b){q=u}}}}return q},embedSWF:function(x,AE,AB,AD,q,w,r,z,AC){if(!h.w3cdom||!x||!AE||!AB||!AD||!q){return }AB+="";AD+="";if(c(q)){W(AE,false);var AA={};if(AC&&typeof AC===Q){for(var v in AC){if(AC[v]!=Object.prototype[v]){AA[v]=AC[v]}}}AA.data=x;AA.width=AB;AA.height=AD;var y={};if(z&&typeof z===Q){for(var u in z){if(z[u]!=Object.prototype[u]){y[u]=z[u]}}}if(r&&typeof r===Q){for(var t in r){if(r[t]!=Object.prototype[t]){if(typeof y.flashvars!=b){y.flashvars+="&"+t+"="+r[t]}else{y.flashvars=t+"="+r[t]}}}}f(function(){U(AA,y,AE);if(AA.id==AE){W(AE,true)}})}else{if(w&&!A&&c("6.0.65")&&(h.win||h.mac)){A=true;W(AE,false);f(function(){var AF={};AF.id=AF.altContentId=AE;AF.width=AB;AF.height=AD;AF.expressInstall=w;k(AF)})}}},getFlashPlayerVersion:function(){return{major:h.pv[0],minor:h.pv[1],release:h.pv[2]}},hasFlashPlayerVersion:c,createSWF:function(t,r,q){if(h.w3cdom){return U(t,r,q)}else{return undefined}},removeSWF:function(q){if(h.w3cdom){X(q)}},createCSS:function(r,q){if(h.w3cdom){V(r,q)}},addDomLoadEvent:f,addLoadEvent:R,getQueryParamValue:function(v){var u=K.location.search||K.location.hash;if(v==null){return g(u)}if(u){var t=u.substring(1).split("&");for(var r=0;r<t.length;r++){if(t[r].substring(0,t[r].indexOf("="))==v){return g(t[r].substring((t[r].indexOf("=")+1)))}}}return""},expressInstallCallback:function(){if(A&&M){var q=C(m);if(q){q.parentNode.replaceChild(M,q);if(l){W(l,true);if(h.ie&&h.win){M.style.display="block"}}M=null;l=null;A=false}}}}}();

// Allows for anchor-based navigation with a set of panels that are each
// children of a parent "container" element.
var PanelManager = Class.create({
  // For tracking panels via Google Analytics
  defer: false,
  recursive: false,
  urchinSettings: {
    active: true, // Allows you to disable this feature
    prefix: '/'   // Specify a prefix (eg '/images') for GA calls
  },

  initialize: function(container) {
    this.options = arguments[1] || { };
    Object.extend(this, this.options);
    this.container = $(container);
    this.setupPanels();
    $(document).observe('hash:changed', this.handleHashChange.bind(this));
  },

  setupPanels: function() {
    this.panels = this.recursive ? this.container.select('.panel') : $$('#' + this.container.identify() + ' > .panel');
    this.defaultPanel = this.defaultPanel ? $(this.defaultPanel) : this.panels.first();
    if (this.defer)
      this.panels.without(this.defaultPanel).invoke('hide');
    else {
      this.activate(this.currentHash()) || this.activate(this.defaultPanel);
    }
  },

  handleHashChange: function(event) {
    this.activate(event.memo.current);
  },

  activate: function(hash_or_element) {
    if (hash_or_element == null)
      return false;
    var hash = Object.isElement(hash_or_element) ? '#' + hash_or_element.identify() : hash_or_element;
    var elementID = hash.replace('#', '').replace(/^_/, '');
    if (elementID.blank())
      return false;
    element = $(elementID);
    if (element && this.panels.include(element)) {
      element.show();
      this.panels.without(element).invoke('hide');
      if (hash != this.currentHash())
        this.setHash("_" + elementID);
      this.logStats(elementID);
      return true;
    } else {
      return false;
    }
  },

  logStats: function(path) {
    if (this.urchinSettings.active) {
      Animoto.track(this.urchinSettings.prefix + path);
    }
  },

  currentHash: function() {
    return window.location.hash;
  },

  setHash: function(newHash) {
    window.location.hash = newHash;
  }
});

// image workspace grid

// scriptaculous dragging doesn't work right (if grid is scrolled) without this
Position.includeScrollOffsets = true;

var Grid = {
  // TODO: Use single swf (or avoid reload when possible) for VideoEditor so it doesn't reload
  init: function(fullLength, maxItems, savePath, refreshPath, defaultDurationShort, defaultDurationLong, maxDurationShort, maxDurationLong, minDuration) {
    Grid.WEB_QUALITY_IMAGE_SIZE_LANDSCAPE = new Array(640, 480);
    Grid.DVD_QUALITY_IMAGE_SIZE_LANDSCAPE = new Array(1024, 768);
    Grid.WEB_QUALITY_IMAGE_SIZE_PORTRAIT = new Array(360, 480);
    Grid.DVD_QUALITY_IMAGE_SIZE_PORTRAIT = new Array(576, 768);
    Grid.container    = jQuery('#container_visuals');
    Grid.sidePanels   = jQuery('.panelBlue_4x7, .sideBox');
    Grid.titlePanel   = jQuery('#titlePreview');
    Grid.footagePanel = jQuery('#footagePreview');
    Grid.imagePanel   = jQuery('#imagePreview');
    Grid.errorPanel   = jQuery('#errorPreview');
    Grid.title_h1     = jQuery('#title_h1');
    Grid.title_h2     = jQuery('#title_h2');
    Grid.allProgress  = jQuery('#uploadProgressAll');
    Grid.setFullLength(fullLength);
    Grid.maxItems = maxItems;
    Grid.savePath = savePath;
    Grid.refreshPath = refreshPath;
    Grid.defaultDurationShort = defaultDurationShort;
    Grid.defaultDurationLong = defaultDurationLong;
    Grid.maxDurationShort = maxDurationShort;
    Grid.maxDurationLong = maxDurationLong;
    Grid.minDuration = minDuration;
    Grid.refreshDelay = 10000;
    Grid.refreshInProgress = false;
    Grid.container.click(Grid.clickOutside);
    Grid.allProgress.find('.cancel').click(Grid.clickCancel);
    Grid.title_h1.keyup(function() {Grid.titleChanged();});
    Grid.title_h2.keyup(function() {Grid.titleChanged();});
  },

  addEvents: function(thumbs) {
    thumbs.mousedown(Grid.mousedown).mouseup(Grid.mouseup).click(Grid.click);
  },

  addEventsUploading: function(thumbs) {
    thumbs.mousedown(Grid.mousedownUploading).click(Grid.click);
  },

  shuffle: function() {
    Grid.container.append(Grid.thumbs().sort(function(){return 0.5 - Math.random()}));
    Grid.refresh();
  },

  setFullLength: function(fullLength) {
    Grid.fullLength = fullLength;
  },

  defaultDuration: function() {
    return Grid.fullLength ? Grid.defaultDurationLong : Grid.defaultDurationShort;
  },

  maxDuration: function() {
    return Grid.fullLength ? Grid.maxDurationLong : Grid.maxDurationShort;
  },

  sortable: function() {
    var scroll = "none"
    if(Grid.maxItems > 12){
      scroll = Grid.container.attr('id')
    }
    
    Sortable.create($(Grid.container.get(0)), {
      constraint: false,
      overlap: 'horizontal',
      tag: 'div',
      only: 'thumb',
      onStart: function(e) {
        var thumb = jQuery(e.element);
        thumb.data('wasDragged', true);
        var itemsAfter = thumb.nextAll('.thumbSelected').hide();
        var itemsBefore = thumb.prevAll('.thumbSelected').hide();
        // prevAll returns items in reverse order so we need to reverse them back
        itemsBefore = jQuery(jQuery.makeArray(itemsBefore).reverse());
        thumb.data('itemsAfter', itemsAfter);
        thumb.data('itemsBefore', itemsBefore);
        if (itemsBefore.length > 0 || itemsAfter.length > 0) {
          thumb.addClass('thumbStack');
          thumb.find('.stackCount').text(1 + itemsBefore.length + itemsAfter.length);
        }
      },
      onDrag: function() {},
      onEnd: function(e) {
        var thumb = jQuery(e.element);
        thumb.removeClass('thumbStack');
        thumb.data('itemsBefore').insertBefore(thumb).show();
        thumb.data('itemsAfter').insertAfter(thumb).show();
      },
      onChange: function() {},
      // onUpdate: function() {}, // not working
      scroll: scroll
    });
  },

  thumbs: function(selector) {return selector ? Grid.container.find('.thumb').filter(selector) : Grid.container.find('.thumb');},
  selected: function() {return Grid.container.find('.thumbSelected');},

  addVisuals: function(visualDatas) {
    
    jQuery.each(visualDatas, function(i, visualData) {
      if(Grid.spacesLeft() > 0){
        if (visualData.type == 'Image') {
          Grid.addImage(visualData);
        } else if (visualData.type == 'Title') {
          Grid.addTitle(visualData);
        } else if (visualData.type == 'Footage') {
          Grid.addFootage(visualData);
        }
      } else{
        AnimotoFramework.showFlashMessage("whoops", "You have reached the maximum number of visuals, some have not been added!");
        return false;
      }
    })
    Grid.refresh();
    Grid.showFootageHint();
  },

  addImage: function(data) {
    var thumb;
    if (data.errored) {
      thumb = jQuery(tmpl('imageErroredTemplate', {})).data('data', data);
      thumb.data('error', {filename: data.source_url, message: "There was an error retrieving this image."});
    } else if (data.loading) {
      thumb = jQuery(tmpl('imageRetrievingTemplate', {})).data('data', data);
    } else {
      thumb = jQuery(tmpl('imageTemplate', {okey: data.okey, spotlit: data.spotlit || false})).data('data', data);
      Grid.markQuality(thumb);
    }
    thumb.appendTo(Grid.container)
    Grid.addEvents(thumb);
    Grid.rotateThumbImages(thumb);
    return thumb;
  },

  selectedDuration: function(data) {
    return parseInt((data.end_time - data.start_time)/1000);
  },

  addFootage: function(data) {
    var thumb;
    if (data.errored) {
      thumb = jQuery(tmpl('footageErroredTemplate', {})).data('data', data);
      thumb.data('error', {filename: data.source_url, message: "There was an error retrieving this video."});
    } else if (data.loading) {
      thumb = jQuery(tmpl('footageRetrievingTemplate', {})).data('data', data);
    } else {
      // invalid end_time
      if (data.end_time - data.start_time <= 0) {
        data.end_time = data.start_time + Grid.defaultDuration();
      }
      // over-limit end_time
      if (data.end_time - data.start_time > Grid.maxDuration()) {
        data.end_time = data.start_time + Grid.maxDuration();
      }
      // too-short end_time
      if (data.end_time - data.start_time < Grid.minDuration) {
        data.end_time = data.start_time + Grid.minDuration;
      }
      // ensure end_time is <= clip length
      data.end_time = Math.min(data.end_time, data.length);
      // create thumb
      var templateData = {okey: data.okey, duration: Grid.selectedDuration(data)};
      thumb = jQuery(tmpl('footageTemplate', templateData)).data('data', data);
      thumb.toggleClass('unset', !!thumb.data('data').unset);
      thumb.find('.footageOverlay').toggleClass('footageOverlayAudio', thumb.data('data').has_audio && thumb.data('data').audio_level == 'MIX');
    }
    thumb.appendTo(Grid.container);
    Grid.addEvents(thumb);
    Grid.rotateThumbImages(thumb);
    return thumb;
  },

  addUploading: function(files, getFileType) {
    Grid.allProgress.show();
    Grid.allProgress.find('.uploadingComplete').hide();
    Grid.allProgress.find('.uploadingStatus, .cancel').show();
    jQuery.each(files, function(i, file) {
      var type = getFileType(file.name);
      var thumb;
      if (type == 'image') {
        thumb = jQuery(tmpl('imageUploadingTemplate', {id: file.id}));
      } else if (type == 'footage') {
        thumb = jQuery(tmpl('footageUploadingTemplate', {id: file.id}));
        Hint.close('footage_upload');
      }
      thumb.appendTo(Grid.container).data('file', file);
      Grid.addEventsUploading(thumb);
    });
    Grid.refresh();
  },

  uploadStart: function(e) {
    jQuery('#' + e.id).find('.loadingBar').show().end().
      find('.status').hide().filter('.uploading').show();
  },

  uploadProgress: function(e) {
    var progress = Math.round(100 * (e.bytesLoaded / (e.bytesTotal||1)));
    var thumb = jQuery('#' + e.id);
    if (progress > 98) {
      thumb.find('.loadingBar').show();
      thumb.find('.status').hide().filter('.processing').show();
      thumb.find('.progressBar').hide();
    } else {
      thumb.find('.loadingBar').hide();
      thumb.find('.progressBar').show().find('.progressBarInner').css('width', progress + '%');
    }
  },

  uploadProgressAll: function(totalBytesSent, totalBytes) {
    Grid.allProgress.show();
    Grid.allProgress.find('.bar').css('width', (totalBytesSent/totalBytes)*100 + '%');
    Grid.allProgress.find('.bytesSent').text((totalBytesSent/1000).withCommas(0));
    Grid.allProgress.find('.bytesTotal').text((totalBytes/1000).withCommas(0));
  },

  uploadError: function(fileId, message, details) {
    var thumb = jQuery('#' + fileId);
    var newThumb;
    if (thumb.is('.image')) {
      newThumb = jQuery(tmpl('imageErroredTemplate', {})).toggleClass('thumbSelected', thumb.is('.thumbSelected'));
    } else if (thumb.is('.footage')) {
      newThumb = jQuery(tmpl('footageErroredTemplate', {})).toggleClass('thumbSelected', thumb.is('.thumbSelected'));
    } else {
      Animoto.error("uploadError error: Couldn't find fileId " + fileId);
      return;
    }
    newThumb.data('error', {filename: thumb.data('file').name, message: message, details: details});
    Grid.addEvents(newThumb);
    thumb.replaceWith(newThumb);
    Grid.refresh();
  },

  uploadSuccess: function(fileId, response) {
    var thumb = jQuery('#' + fileId);
    var newThumb;
    if (thumb.is('.image')) {
      newThumb = Grid.addImage({okey:     response.id,
                                rotation: 0,
                                spotlit:  false,
                                height:   response.height || 0,
                                width:    response.width || 0});
    } else if (thumb.is('.footage')) {
      newThumb = Grid.addFootage({okey:        response.id,
                                  rotation:    response.rotation || 0,
                                  start_time:  0,
                                  end_time:    0,
                                  length:      response.length,
                                  audio_level: 'NONE',
                                  has_audio:   !!response.has_audio,
                                  height:      response.height || 0,
                                  width:       response.width || 0,
                                  unset:       true});
    }
    newThumb.toggleClass('thumbSelected', thumb.is('.thumbSelected'));
    thumb.replaceWith(newThumb);
    Grid.refresh();
    Grid.showFootageHint();
  },

  showFootageHint: function() {
    // edit-your-video hint (if we're currently on the customize panel)
    if (/^#?_customize$/.test(location.hash)) {
      Hint.show('first_footage', Grid.thumbs('.footage.loaded:first'), (Grid.fullLength ? "full" : "short"));
    }
  },

  uploadsStopped: function() {
    Grid.allProgress.find('.uploadingComplete').show();
    Grid.allProgress.find('.uploadingStatus, .cancel').hide();
    Grid.allProgress.find('.bar').css('width', '100%');
  },

  clickCancel: function() {
    if (confirm('This will stop your current upload.')) {
      Grid.cancel();
    }
    return false;
  },

  cancel: function() {
    visualUploader && visualUploader.cancelAll();
    Grid.thumbs().removeClass('thumbSelected');
    Grid.thumbs('.uploading').addClass('thumbSelected');
    Grid.destroy(true);
    Grid.uploadsStopped();
  },

  moveTo: function(thumb) {
    $(Grid.container.get(0)).moveTo($(jQuery(thumb).get(0)));
  },

  addTitle: function(data) {
    data.h1 = data.h1 || '';
    data.h2 = data.h2 || '';
    var thumb = jQuery(tmpl('titleTemplate', {}));
    thumb.appendTo(Grid.container).data('data', data);
    Grid.addEvents(thumb);
  },

  markQuality: function(thumb) {
    if (thumb.is('.image.loaded')) {
      // validate landscape
      if (thumb.data('data').width > thumb.data('data').height) {
        if (thumb.data('data').width < Grid.WEB_QUALITY_IMAGE_SIZE_LANDSCAPE[0] || thumb.data('data').height < Grid.WEB_QUALITY_IMAGE_SIZE_LANDSCAPE[1]) {
          thumb.addClass('thumbLowWebLandscapeQuality');
        }
        if (thumb.data('data').width < Grid.DVD_QUALITY_IMAGE_SIZE_LANDSCAPE[0] || thumb.data('data').height < Grid.DVD_QUALITY_IMAGE_SIZE_LANDSCAPE[1]) {
          thumb.addClass('thumbLowDVDLandscapeQuality');
        }
      }
      // validate portrait
      else {
        if (thumb.data('data').width < Grid.WEB_QUALITY_IMAGE_SIZE_PORTRAIT[0] || thumb.data('data').height < Grid.WEB_QUALITY_IMAGE_SIZE_PORTRAIT[1]) {
          thumb.addClass('thumbLowWebPortraitQuality');
        }
        if (thumb.data('data').width < Grid.DVD_QUALITY_IMAGE_SIZE_PORTRAIT[0] || thumb.data('data').height < Grid.DVD_QUALITY_IMAGE_SIZE_PORTRAIT[1]) {
          thumb.addClass('thumbLowDVDPortraitQuality');
        }
      }
    } 
  },

  duplicate: function() {
    var selected = Grid.selected();
    var duplicable = selected.filter('.image.loaded, .footage.loaded, .title');
    if (duplicable.length == 0) {
      AnimotoFramework.showFlashMessage("whoops", "You haven't selected any valid items!");
    } else if (Grid.spacesLeft() - duplicable.length < 0) {
      Grid.notEnoughSpace();
    } else {
      var insertAfter = duplicable.filter(':last');
      jQuery.each(duplicable.get().reverse(), function(i, thumb) {
        var newData = jQuery.extend({}, jQuery(thumb).data('data'));
        var newThumb = jQuery(thumb).clone().insertAfter(insertAfter).data('data', newData);
        Grid.addEvents(newThumb);
      });
      selected.removeClass('thumbSelected');
      Grid.rotateThumbImages(Grid.selected()); // fix for canvas-based rotation (FF3.0) where cloned canvas doesn't have image drawn
      Grid.refresh();
    }
  },

  destroy: function(force) {
    var selected = Grid.selected();
    if (selected.length == 0) {
      AnimotoFramework.showFlashMessage("whoops", "You haven't selected any items!");
    } else {
      var message = 'Are you sure you want to delete ' + selected.length + ' item' + (selected.length > 1 ? 's' : '') + '?';
      var allErrored = selected.filter('.thumbErrored').length == selected.length;
      if (force || allErrored || confirm(message)) {
        selected.remove();
        Grid.refresh();
      }
    }
  },

  click: function() {return false;},

  clickOutside: function(e) {
    if (e.target == Grid.container.get(0)) {
      Grid.hideSideboxes(true);
    }
  },

  // shift:   extends current selection (also filling in gaps to make a contiguous selection)
  // command: adds/removes single item to selection w/o affecting selected status of other items
  // normal:  selects a single item (unselecting everything else) *unless* the mousedown target 
  //            is already selected and ends up being dragged (see mouseup handler also)
  mousedown: function(e) {
    var thumb = jQuery(this);
    thumb.data('wasDragged', false);
    var selected = Grid.selected();
    if (e.shiftKey && selected.length > 0) {
      var thumbs = Grid.thumbs();
      var clickedPos = thumbs.index(thumb);
      var selectStart = thumbs.index(selected);
      var selectEnd = selectStart + selected.length - 1;
      var start = Math.min(clickedPos, selectStart);
      var end = Math.max(clickedPos, selectEnd);
      for (var i=start; i <= end; i++) {
        jQuery(thumbs[i]).addClass('thumbSelected');
      }
    } else if (e.metaKey) {
      thumb.toggleClass('thumbSelected');
    } else if (!thumb.is('.thumbSelected')) {
      thumb.addClass('thumbSelected');
      selected.not(thumb).removeClass('thumbSelected');
    }
    Grid.updateSidebox();
  },

  // finish off mousedown logic in the normal-click case when there might have been a drag coming
  mouseup: function(e) {
    var thumb = jQuery(this);
    if (!e.shiftKey && !e.metaKey && thumb.is('.thumbSelected') && !thumb.data('wasDragged')) {
      Grid.selected().not(thumb).removeClass('thumbSelected');
    }
  },

  mousedownUploading: function() {
    Grid.hideSideboxes(true);
  },

  setImage: function(imageThumb) {
    jQuery('#image_frame img').remove();
    jQuery('#image_frame').addClass('loading');
    Grid.imagePanel.show();
    var imageUrl = imageThumb.find('img').attr('src').replace("/t.", "/l.");
    Grid.imagePanel.find('.lowWebLandscapeQuality').toggle(imageThumb.is('.thumbLowWebLandscapeQuality'));
    Grid.imagePanel.find('.lowWebPortraitQuality').toggle(imageThumb.is('.thumbLowWebPortraitQuality'));
    Grid.imagePanel.find('.lowDVDLandscapeQuality').toggle(imageThumb.is('.thumbLowDVDLandscapeQuality') && !imageThumb.is('.thumbLowWebLandscapeQuality'));
    Grid.imagePanel.find('.lowDVDPortraitQuality').toggle(imageThumb.is('.thumbLowDVDPortraitQuality') && !imageThumb.is('.thumbLowWebPortraitQuality'));
    var img = new Image();
    jQuery(img).load(function(){
      if(jQuery('#image_frame img').length > 0){
        jQuery('#image_frame img').remove();
      }
      jQuery(this).hide();
      jQuery('#image_frame').removeClass('loading').append(this);
      jQuery(this).show();
      if(jQuery.browser.msie){
         jQuery(this).css('width','expression(this.height < this.width && this.width > 220 ? "220px" : true)');
         jQuery(this).css('height', 'expression(this.height >= this.width && this.height > 220 ? "220px" : true);')
      }
     }).attr('src',imageUrl).addClass('image_detail');
    
    
    var rotation = imageThumb.data('data').rotation;
    AnimotoFramework.rotateImages(Grid.imagePanel.find('.image_detail'), rotation);
  },

  setFootage: function(footageThumb) {
    Grid.footagePanel.show();
    VideoEditor.showEditor();
    VideoEditor.load(footageThumb);
  },

  newTitle: function() {
    if (Grid.spacesLeft() <= 0) {
      Grid.notEnoughSpace();
      return;
    }
    var selected = Grid.selected();
    var thumb = jQuery(tmpl('titleTemplate', {}));
    thumb.data('data', {h1: "", h2: ""}).addClass('thumbSelected');
    Grid.addEvents(thumb);
    if (selected.length >= 1) {
      thumb.insertAfter(selected.filter(':last'));
      selected.removeClass('thumbSelected');
    } else {
      thumb.prependTo(Grid.container);
    }
    Grid.refresh();
    Grid.moveTo(thumb);
  },

  saveTitle: function() {
    var currentTitle = Grid.titlePanel.data('title');
    // check for 'data' b/c when a title is deleted from the grid jQuery deletes its data automatically
    if (currentTitle && currentTitle.data('data')) {
      currentTitle.data('data').h1 = Grid.title_h1.val();
      currentTitle.data('data').h2 = Grid.title_h2.val();
    };
  },

  setTitle: function(title) {
    Grid.saveTitle(); // save old title
    Grid.titlePanel.data('title', title);
    Grid.title_h1.val(title.data('data').h1);
    Grid.title_h2.val(title.data('data').h2);
    Grid.titleChanged(); // save new title
  },

  titleChanged: function() {
    jQuery('#h1_chars_remaining').text(Grid.title_h1.attr('maxlength') - Grid.title_h1.val().length);
    jQuery('#h2_chars_remaining').text(Grid.title_h2.attr('maxlength') - Grid.title_h2.val().length);
    Grid.saveTitle();
  },

  updateSidebox: function() {
    var selected = Grid.selected();
    Grid.hideSideboxes();
    if (selected.length != 1) {
    } else if (selected.is('.title')) {
      Grid.titlePanel.show(); // must show in order to set focuses
      Grid.setTitle(selected);
      Grid.title_h1.focus();
    } else if (selected.is('.image.loaded')) {
      Grid.setImage(selected);
    } else if (selected.is('.footage.loaded')) {
      Grid.setFootage(selected);
      Hint.close('first_footage');
    } else if (selected.is('.thumbErrored')) {
      Grid.errorPanel.show();
      var error = selected.data('error');
      Grid.errorPanel.find('.filename').text(error.filename);
      Grid.errorPanel.find('.message').text(error.message || '');
      Grid.errorPanel.find('.details').text(error.details || '');
    }
  },

  hideSideboxes: function(clearSelected) {
    Grid.sidePanels.hide();
    VideoEditor.hideEditor();
    if (clearSelected) {
      Grid.thumbs().removeClass('thumbSelected');
    }
    Hint.hide('footage_length_upsell');
    Hint.hide('footage_audio_toggle');
  },

  updateStats: function() {
    // Tom says he did something like add up the length of 10000 projects and found that the average time per image was 2.1 seconds
    // However, he says really it could vary from 1.5 to 3s or so.
    var SECONDS_PER_IMAGE = 2.1
    var SECONDS_PER_TITLE = 4.2;
    var SHORT_LENGTH = 30; // The length of shorts in seconds.
    var thumbs = Grid.thumbs();
    var effectiveImageCount = thumbs.filter('.image').length + (2 * thumbs.filter('.title').length);
    var estimatedLength = thumbs.filter('.image').length * SECONDS_PER_IMAGE;
    estimatedLength += thumbs.filter('.title').length * SECONDS_PER_TITLE;
    thumbs.filter('.footage.loaded').each(function() {
      var data = jQuery(this).data('data');
      estimatedLength += (data.end_time - data.start_time)/1000;
    })
    var tooLong = !Grid.fullLength && estimatedLength > SHORT_LENGTH;
    jQuery('#image_counter').text(thumbs.length);
    jQuery('#visualsLengthWarning').toggle(tooLong);
    jQuery('#current_video_length').text((tooLong ? SHORT_LENGTH : estimatedLength).toDuration());
  },

  spotlight: function() {
    var selected = Grid.selected();
    if (selected.length == 0) {
      AnimotoFramework.showFlashMessage("whoops", "You haven't selected any items!");
    } else if (selected.filter('.image').length != selected.length) {
      AnimotoFramework.showFlashMessage('whoops', "Sorry, only images can be spotlighted.");
    } else {
      selected.filter('.image.loaded').toggleClass('thumbSpotlit').each(function(i, visual) {
        jQuery(visual).data('data').spotlit = true;
      });
    }
  },

  rotateThumbImages: function(thumbs) {
    thumbs.each(function(i) {
      var thumb = jQuery(this);
      AnimotoFramework.rotateImages(thumb.find('img.thumbImg'), thumb.data('data').rotation);
    });
  },

  rotate: function() {
    var selected = Grid.selected();
    if (selected.length == 0) {
      AnimotoFramework.showFlashMessage("whoops", "You haven't selected any items!");
    } else if (selected.is('.title')) {
      AnimotoFramework.showFlashMessage('whoops', "Sorry, titles cannot be rotated.");
    } else {
      selected.filter('.image.loaded, .footage.loaded').each(function() {
        var thumb = jQuery(this);
        var rotation = (thumb.data('data').rotation + 1) % 4;
        thumb.data('data').rotation = rotation;
        Grid.rotateThumbImages(thumb);
        AnimotoFramework.rotateImages(Grid.imagePanel.find('.image_detail'), rotation);
      });
      // check for case of currently-showing footage being rotated so that we can avoid full editor reload later
      var newSelected = Grid.selected();
      if (newSelected.length == 1 && newSelected.is('.footage.loaded')) {
        VideoEditor.updateRotation(newSelected);
      }
      //Grid.refresh();
    }
  },

  spacesLeft: function() {return Grid.maxItems - Grid.thumbs().length;},

  serialize: function() {
    var gridJSON = jQuery.map(Grid.thumbs('.loaded, .title'), function(item) {
      var thumb = jQuery(item);
      if (thumb.is('.image.loaded, .image.retrieving')) {

        return {type:     "Image",
                okey:     thumb.data('data').okey,
                spotlit:  thumb.is('.thumbSpotlit'),
                rotation: thumb.data('data').rotation};

      } else if (thumb.is('.title')) {

        return {type: "Title",
                h1:   thumb.data('data').h1 || '',
                h2:   thumb.data('data').h2 || ''};

      } else if (thumb.is('.footage.loaded')) {

        return {type:        "Footage",
                okey:        thumb.data('data').okey,
                rotation:    thumb.data('data').rotation,
                start_time:  thumb.data('data').start_time,
                end_time:    thumb.data('data').end_time,
                audio_level: thumb.data('data').audio_level};
      }
    }).toJSON();

    try {
      eval('(' + gridJSON + ')');
    } 
    catch (e) {
      Animoto.error("JSON GRID SERIALIZE FAILURE: " + e.description + " WITH JSON DATA [" + gridJSON + "]");
      AnimotoFramework.showFlashMessage("Sorry, but we encountered technical problems saving your imagery (JSON PARSE).");
    }
    return gridJSON;
  },

  save: function(success, error) {
    jQuery('#notifier_saving').show();
    jQuery.ajax({
      type: "PUT",
      data: {'project[visuals]': Grid.serialize()},
      url: Grid.savePath,
      success: function(data){
        jQuery('#notifier_saving').hide();
        success && success();
      },
      error: function(XMLHttpRequest, textStatus, errorThrown){
        AnimotoFramework.showFlashMessage('whoops', 'There was an error saving your project.  Please try again later and if the problem persists please let us know through the feedback button.');
        jQuery('#notifier_saving').hide();
        error && error();
      }
    });
  },

  updateRetrieving: function() {
    var allOkeys = jQuery.makeArray(Grid.thumbs('.retrieving').map(function() {return jQuery(this).data('data').okey;}));
    var currentOkeys = allOkeys.slice(0,30); // limit each request to 30 okeys.
    if (currentOkeys.length > 0 && !Grid.refreshInProgress) {
      Grid.refreshInProgress = true;
      jQuery.ajax({
        type: "GET",
        data: {'okeys': currentOkeys.join(',')},
        dataType: "json",
        url: Grid.refreshPath,
        cache: false,
        success: function(visualDatas){
          jQuery.each(visualDatas, function(i, visualData) {
            Grid.thumbs('.retrieving').each(function(i, thumb) {
              thumb = jQuery(thumb);
              if (thumb.data('data').okey == visualData.okey) {
                if (thumb.is('.image')) {
                  var newThumb = Grid.addImage(visualData).toggleClass('selected', thumb.is('.selected'));
                  thumb.replaceWith(newThumb);
                } else if (thumb.is('.footage')) {
                  var newThumb = Grid.addFootage(visualData).toggleClass('selected', thumb.is('.selected'));
                  thumb.replaceWith(newThumb);
                }
              }
            });
          });
          Grid.refresh();
        },
        error: function(XMLHttpRequest, textStatus, errorThrown) {
          AnimotoFramework.showFlashMessage('whoops', 'There was an error retrieving one or more of your image thumbnails.  Please reload the page or contact us if the problem continues.')
        },
        complete: function() {
          Grid.refreshInProgress = false;
        }
      });
    }
  },

  updateFootageValues: function(thumb) {
    thumb.find('.duration').text(Grid.selectedDuration(thumb.data('data')));
    thumb.data('data').unset = false;
    thumb.removeClass('unset');
    thumb.find('.footageOverlay').toggleClass('footageOverlayAudio', thumb.data('data').has_audio && thumb.data('data').audio_level == 'MIX');
  },

  updateStatus: function() {
    // TODO: update 'uploading images' text
    var retrieving = Grid.thumbs('.retrieving');
    jQuery('#retrievalStatus')        .toggle(retrieving.length > 0);
    jQuery('#retrievalStatus .count') .html(retrieving.length);
    jQuery('#retrievalStatus .plural').toggle(retrieving.length > 1);

    var uploading = Grid.thumbs('.uploading');
    jQuery('#uploadStatus')        .toggle(uploading.length > 0);
    jQuery('#uploadStatus .count') .html(uploading.length);
    jQuery('#uploadStatus .plural').toggle(uploading.length > 1);

    if (Grid.thumbs('.retrieving').length > 0) {
      setTimeout(Grid.updateRetrieving, Grid.refreshDelay);
    }
  },

  notEnoughSpace: function(solution) {
    solution = solution || "";
    if (Grid.spacesLeft() == 0) {
      AnimotoFramework.showFlashMessage("Sorry, you don't have room for any more visuals.", solution);
    } else {
      AnimotoFramework.showFlashMessage("Sorry, you only have room for " + Grid.spacesLeft() + " more visuals in this project.", solution);
    }
  },

  uploadsInProgress: function() {
    if (AnimotoFramework.uploadsInProgress) {
      var uploadWarning = "Warning: You appear to have uploads in progress.  Click 'ok' to cancel your uploads and proceed.  Otherwise, click 'cancel' and try again after your uploads are finished.";
      if (confirm(uploadWarning)) {
        Grid.cancel();
        return false; // cancelled uploads in progress
      }
      return true; // uploads in progress
    }
    return false; // no uploads in progress
  },

  // call when items have been added/removed/replaced
  refresh: function() {
    Grid.sortable();
    Grid.updateStatus();
    Grid.updateSidebox();
    Grid.updateStats();
  }

}


var Collections = function() {
  var footageDuration = function(length) {
    total_seconds = parseInt(length/1000);
    minutes = parseInt(total_seconds/60);
    seconds = total_seconds - (minutes*60);
    secondsStr = seconds < 10 ? '0' + seconds : seconds.toString();
    return minutes + ":" + secondsStr;
  };

  return {
    init: function() {
      Collections.imageButtonsHolder     = jQuery('#image_collection_categories');
      Collections.footageButtonsHolder   = jQuery('#footage_collection_categories');
      Collections.imagePreviewPanel      = jQuery('#collectionImagePreview');
      Collections.footagePreviewPanel    = jQuery('#collectionFootagePreview');
      Collections.sidePanels             = jQuery('#collectionImagePreview, #collectionFootagePreview');
      Collections.genresBoxes            = jQuery('.collection_categories_box');
      Collections.imageCollectionsArea   = jQuery('#image_collections');
      Collections.footageCollectionsArea = jQuery('#footage_collections');

      Collections.sidePanels.find('.close').click(function() {
        Collections.unselectAll();
        return false;
      });
    },

    addImages: function(genres) {
      Collections.addButtons(genres, 'image');
    },

    addFootages: function(genres) {
      Collections.addButtons(genres, 'footage');
    },

    addButtons: function(genres, kind) {
      jQuery.each(genres, function(i, genre) {
        if (kind == 'image') {
          var button = jQuery(tmpl('imageCollectionButtonTemplate', {genre: genre.name, kind: kind}));
          button.appendTo(Collections.imageButtonsHolder).data('genre', genre).data('kind', kind).click(Collections.clickGenre);
        } else { // footage
          var button = jQuery(tmpl('footageCollectionButtonTemplate', {genre: genre.name, kind: kind}));
          button.appendTo(Collections.footageButtonsHolder).data('genre', genre).data('kind', kind).click(Collections.clickGenre);
        }
      });
    },

    clickGenre: function() {
      Collections.imagePanels().hide()
      Collections.genresBoxes.hide();
      var button = jQuery(this);
      if (!button.data('panel')) {
        Collections.addPanel(button);
      }
      button.data('panel').show();
      Collections.updateSidebox();
      Animoto.track('/image-collections/genre/' + button.data('genre').name);
      return false;
    },

    clickItem: function(e) {
      var image = jQuery(this);
      if (!e.metaKey) {
        Collections.selected().removeClass('selected');
      }
      image.toggleClass('selected');
      Collections.updateSidebox();
      return false;
    },

    clickOutside: function(e) {
      if (jQuery(e.target).is('.collectionGrid')) {
        Collections.selected().removeClass('selected');
      }
      Collections.updateSidebox();
    },

    selected: function() {return jQuery('.collectionGrid div.selected');},

    unselectAll: function() {
      jQuery('.collectionGrid div.selected').removeClass('selected');
      Collections.updateSidebox();
    },

    imagePanels: function() {return jQuery('.collectionPanel');},

    updateSidebox: function() {
      jQuery('#loader img').remove();
      jQuery('#loader').addClass('loading');
      Collections.sidePanels.hide();
      CollectionFootagePreview.hide();
      var selected = Collections.selected();
      if (selected.length == 1) {
        if (selected.is('.image')) {
          var url = selected.data('url').replace("/t.", '/l.');
          var img = new Image();
          jQuery(img).load(function(){
            jQuery('#loader img').remove();
            jQuery(this).hide();
            jQuery('#loader').removeClass('loading').append(this);
            jQuery(this).show();
            if(jQuery.browser.msie){
               jQuery(this).css('width','expression(this.height < this.width && this.width > 220 ? "220px" : true)');
               jQuery(this).css('height', 'expression(this.height >= this.width && this.height > 220 ? "220px" : true);')
            }
          }).attr('src',url)
          Collections.imagePreviewPanel.show();
          Collections.imagePreviewPanel.find('.credits').hide();
          Collections.imagePreviewPanel.find('.' + selected.data('provider_id')).show();
        } else if (selected.is('.footage')) {
          Collections.footagePreviewPanel.show();
          CollectionFootagePreview.load(selected);
          CollectionFootagePreview.show();
        }
      }
    },

    addPanel: function(button) {
      // add panel
      var panel = jQuery(tmpl('collectionPanelTemplate', {genre: button.data('genre').name}));
      if (button.data('kind') == 'image') {
        panel.appendTo(Collections.imageCollectionsArea);
      } else { //footage
        panel.appendTo(Collections.footageCollectionsArea);
      }
      button.data('panel', panel);
      // add thumbs
      jQuery.each(button.data('genre').items, function(i, item) {
        var template = (button.data('kind') == 'image') ? 'collectionImageTemplate' : 'collectionFootageTemplate';
        var thumb = jQuery(tmpl(template, {url: item.url, duration: footageDuration(item.length)}));
        thumb.appendTo(panel.find('.collectionGrid')).click(Collections.clickItem);
        thumb.data('okey', item.okey).data('url', item.url).data('provider_id', item.provider_id);
        if (thumb.is('.footage')) {
          thumb.data('length', item.length).data('has_audio', item.has_audio);
          thumb.find('.footageOverlay').toggleClass('footageOverlayAudio', !!thumb.data('has_audio'));
        }
      });
      // grid
      panel.find('.collectionGrid').click(Collections.clickOutside);
      // back button
      panel.find('.back').click(function() {
        Collections.imagePreviewPanel.hide();
        Collections.imagePanels().hide();
        Collections.genresBoxes.show();
        Collections.unselectAll();
        return false;
      });
      // done button
      panel.find('.collectionSelect_button').click(Collections.clickDone);
    },

    clickDone: function() {
      Collections.imagePanels().hide();  // IE6 needs this to happen before imageCollectionsArea.hide()
      Collections.imageCollectionsArea.hide();
      Collections.footageCollectionsArea.hide();
      Collections.genresBoxes.show();
      var selectedImages = Collections.selected();
      //moveTo doesn't seem to work w/o customize being visible first
      document.fire('hash:changed', {current: '#_customize'});
      if (selectedImages.length > 0) {
        Grid.addVisuals(jQuery.map(selectedImages, function(visual) {
          if (jQuery(visual).is('.image')) {
            return {type: "Image",
                    okey: jQuery(visual).data('okey'),
                    spotlit: false,
                    rotation: 0};
          } else {
            var footage = jQuery(visual);
            return {type: "Footage",
                    okey: footage.data('okey'),
                    start_time: 0,
                    end_time: 0,
                    length: footage.data('length'),
                    audio_level: 'NONE',
                    has_audio: footage.data('has_audio'),
                    rotation: 0,
                    unset: true};
          }
        }));
        Grid.moveTo(Grid.thumbs(':last'));
        // track visuals that were chosen
        jQuery.each(selectedImages, function(i, visual) {
          var kind = jQuery(visual).is('.image') ? 'image' : 'footage';
          Animoto.track('/image-collections/' + kind + '/' + jQuery(visual).data('okey'));
        });
      }
      Collections.unselectAll();
      return false;
    }
  };
}();


// creates Hints that never return after being closed.
// basic concepts:
//   - all hint commands are ignored if the specified hint wasn't created.
//   - create the hint in a rails view inside the condition: if show_hint?(hint_name).
//     this will only create the hint if it hasn't already been registered as viewed for the current user.
//   - show the hint with Hint.show(hint_name, target) whenever it might be needed.
//     if it's already been viewed or closed the call is ignored.
//   - hide the hint temporarily with Hint.hide(hint_name)
//   - close the hint permanently with Hint.close(hint_name) or equivalently the user may click the 'ok' button on the hint.
//   - Hint.init must be called once with the url that should be used to register hint views.
//   - make sure to create a microtemplate for each hint using the hint_micro_template helper
var Hint = function() {
  // private

  // send ajax request to register view on backend
  var registerView = function(hint) {
    if (hint.length > 0 && !hint.data('registered')) {
      jQuery.ajax({
        type: "POST",
        url: Hint.registerUrl,
        data: {'user_hint[name]': hint.data('name')},
        success: function(data){},
        error: function(XMLHttpRequest, textStatus, errorThrown){
          Animoto.error('error saving hint ' + hint.data('name'));
        }
      });
      hint.data('registered', true);
    }
  };

  // remove from dom and register view
  var remove = function(hint) {
    if (hint.data('fakeHint')) {
      hint.hide();
    } else {
      registerView(hint);
      hint.remove();
    }
  };

  var LEFT_RIGHT_VERTICAL_OFFSET = 20;

  var setArrowPosition = function(hint) {
    var arrow = hint.find('.arrow');
    if (hint.is('.hintRight, .hintLeft')) {
      arrow.css('top', hint.height()/2 - LEFT_RIGHT_VERTICAL_OFFSET - arrow.height()/2);
    }
    if (hint.is('.hintTop, .hintBottom')) {
      arrow.css('left', hint.width()/2 - arrow.width()/2);
    }
  };

  var setPosition = function(hint, target, offset) {
    var middle = target.offset().top + target.height()/2;
    var center = target.offset().left + target.width()/2;
    var top, left;
    if (hint.is('.hintRight')) {
      top = middle - hint.height()/2 + LEFT_RIGHT_VERTICAL_OFFSET;
      left = target.offset().left + target.width();
    } else if (hint.is('.hintBottom')) {
      top = target.offset().top + target.height();
      left = center - hint.width()/2;
    } else if (hint.is('.hintTop')) {
      top = target.offset().top - hint.height();
      left = center - hint.width()/2;
    } else { // hintLeft
      top = middle - hint.height()/2 + LEFT_RIGHT_VERTICAL_OFFSET;
      left = target.offset().left - hint.width();
    }
    // custom left position
    if (offset && offset.x) {
      left = offset.x(hint, target);
    }
    // custom top position
    if (offset && offset.y) {
      top = offset.y(hint, target) + LEFT_RIGHT_VERTICAL_OFFSET;
    }
    hint.css({top: top, left: left});
    setArrowPosition(hint);
  };

  // public

  return {
    // not assuming dom-ready
    init: function(registerUrl) {
      Hint.registerUrl = registerUrl;
    },

    find: function(name) {
      return jQuery('.' + name + '_Hint');
    },

    // position: 'Left' (default), 'Right', 'Top' or 'Bottom'
    //   - results in class of hintLeft, hintRight, etc
    // fakeHint: if true then hint view isn't registered in db and isn't permanently removed when closed
    create: function(name, position, templateParams, fakeHint) {
      var templateName = name + '_HintTemplate';
      if(jQuery('#' + templateName).length > 0){
        templateParams = templateParams || {};
        templateParams.position = position || 'Left';
        var hint = jQuery(tmpl(templateName, templateParams)).appendTo('body').data('name', name).data('fakeHint', fakeHint || false);
        hint.find('.close').click(function() {
          remove(hint);
          return false;
        });
      } else{
        return false;
      }
    },

    // target is the item the hint should be pointing at.
    // target must be visible when 'show' is called in order for positioning to work
    // textClass: optional. if present hide all '.text' in content area and then show '.'+textClass
    // offsetCallbacks: optional. custom pointer offsets like {x: function(hint, target)} (and/or 'y:')
    show: function(name, target, textClass, offsetCallbacks) {
      var hint = Hint.find(name);
      if (hint.length > 0 && target.length > 0) {
        if (textClass) {
          hint.find('.text').hide();
          hint.find('.' + textClass).show();
        }
        hint.show();
        setPosition(hint, target, offsetCallbacks);
      }
    },

    hide: function(name) {
      Hint.find(name).hide();
    },

    close: function(name) {
      remove(Hint.find(name));
    },

    // whether the hint is currently visible
    visible: function(name) {
      return Hint.find(name).filter(':visible').length > 0;
    }
  }
}();


// based on http://snippets.dzone.com/posts/show/5514

(function() {
  // image  - selector/dom-element/jquery-element
  // amount - 0,1,2,3. other values converted via mod 4
  AnimotoFramework.rotateImages = function(images, amount) {
    images = jQuery(images);
    amount = (amount || 0) % 4;
    
    var degrees = amount * 90;
    var transform = 'rotate('+degrees+'deg)';
    images.css({'-webkit-transform': transform, '-moz-transform': transform});

    if (!jQuery.browser.msie && (images.css('-webkit-transform') || images.css('-moz-transform'))) {
      // done (IE still reports the transforms even though they don't work)
    } else if (supportsCanvas()) {
      // supported: Firefox 2/3/3.5, Safari 3/4, Opera 9.5b2
      // not supported: Opera 9.27
      useCanvas(images, amount, degrees);
    } else {
      // supported: IE 6/7/8
      images.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation='+amount+')');
    };
  };

  var _supportsCanvas;
  var supportsCanvas = function() {
    if (_supportsCanvas === undefined) {
      _supportsCanvas = jQuery('<canvas style="display:none"></canvas>').get(0).getContext;
    }
    return _supportsCanvas;
  };

  var useCanvas = function(images, amount, degrees) {
    // if rotating by 0 then just show the images and hide any existing canvases
    if (amount == 0) {
      images.show();
      images.next().filter('canvas').hide();
      return;
    }
    // safari needed a short setTimeout delay or else on page load for cached images
    // the width would be 0 and the load event would never fire.  with the delay the
    // width isn't 0 anymore
    setTimeout(function() {
      images.each(function(i, element) {
        var image = jQuery(element);
        image.show();
        
        if (image.width() == 0) {
          // if width is 0 then image probably hasn't finished loading yet
          image.load(function() {
            rotateCanvas(image, amount, degrees);
          });
        } else {
          // already loaded
          rotateCanvas(image, amount, degrees)
        }
      });
    }, 1);
  };

  var rotateCanvas = function(image, amount, degrees) {
    var element = image.get(0);
    image.show();
    // find or create a canvas for the image
    var canvas = image.next().is('canvas') ? image.next() : jQuery('<canvas></canvas>').insertAfter(image);
    var canvasContext = canvas.get(0).getContext('2d');
    
    var width  = image.width();
    var height = image.height();
    
    switch(amount) {
      case 1:
        canvas.attr('width', height);
        canvas.attr('height', width);
        canvasContext.rotate(degrees * Math.PI / 180);
        canvasContext.drawImage(element, 0, -height, width, height);
        break;
      case 2:
        canvas.attr('width', width);
        canvas.attr('height', height);
        canvasContext.rotate(degrees * Math.PI / 180);
        canvasContext.drawImage(element, -width, -height, width, height);
        break;
      case 3:
        canvas.attr('width', height);
        canvas.attr('height', width);
        canvasContext.rotate(degrees * Math.PI / 180);
        canvasContext.drawImage(element, -width, 0, width, height);
        break;
    }

    canvas.show();
    image.hide();
  };
})();