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arguments.length==1?b.firstDescendant():Object.isNumber(c)?a(b)[c]:Element.select(b,c)[d||0]}})()}else if(Prototype.Browser.Gecko&&/rv:1\.8\.0/.test(navigator.userAgent))Element.Methods.setOpacity=function(a,b){a=$(a);a.style.opacity=b==1?.999999:b===""?"":b<1e-5?0:b;return a};else if(Prototype.Browser.WebKit)Element.Methods.setOpacity=function(a,b){a=$(a);a.style.opacity=b==1||b===""?"":b<1e-5?0:b;if(b==1)if(a.tagName.toUpperCase()=="IMG"&&a.width){a.width++;a.width--}else try{var c=document.createTextNode(" ");a.appendChild(c);a.removeChild(c)}catch(d){}return a};if("outerHTML"in document.documentElement)Element.Methods.replace=function(b,a){b=$(b);if(a&&a.toElement)a=a.toElement();if(Object.isElement(a)){b.parentNode.replaceChild(a,b);return b}a=Object.toHTML(a);var c=b.parentNode,f=c.tagName.toUpperCase();if(Element._insertionTranslations.tags[f]){var d=b.next(),e=Element._getContentFromAnonymousElement(f,a.stripScripts());c.removeChild(b);if(d)e.each(function(a){c.insertBefore(a,d)});else e.each(function(a){c.appendChild(a)})}else b.outerHTML=a.stripScripts();a.evalScripts.bind(a).defer();return b};Element._returnOffset=function(b,c){var a=[b,c];a.left=b;a.top=c;return a};Element._getContentFromAnonymousElement=function(e,d,f){var a=new Element("div"),b=Element._insertionTranslations.tags[e],c=false;if(b)c=true;else if(f){c=true;b=["","",0]}if(c){a.innerHTML="&nbsp;"+b[0]+d+b[1];a.removeChild(a.firstChild);for(var g=b[2];g--;)a=a.firstChild}else a.innerHTML=d;return $A(a.childNodes)};Element._insertionTranslations={before:function(a,b){a.parentNode.insertBefore(b,a)},top:function(a,b){a.insertBefore(b,a.firstChild)},bottom:function(a,b){a.appendChild(b)},after:function(a,b){a.parentNode.insertBefore(b,a.nextSibling)},tags:{TABLE:["<table>","</table>",1],TBODY:["<table><tbody>","</tbody></table>",2],TR:["<table><tbody><tr>","</tr></tbody></table>",3],TD:["<table><tbody><tr><td>","</td></tr></tbody></table>",4],SELECT:["<select>","</select>",1]}};(function(){var a=Element._insertionTranslations.tags;Object.extend(a,{THEAD:a.TBODY,TFOOT:a.TBODY,TH:a.TD})})();Element.Methods.Simulated={hasAttribute:function(c,a){a=Element._attributeTranslations.has[a]||a;var b=$(c).getAttributeNode(a);return!!(b&&b.specified)}};Element.Methods.ByTag={};Object.extend(Element,Element.Methods);(function(a){if(!Prototype.BrowserFeatures.ElementExtensions&&a.__proto__){window.HTMLElement={};window.HTMLElement.prototype=a.__proto__;Prototype.BrowserFeatures.ElementExtensions=true}a=null})(document.createElement("div"));Element.extend=function(){function f(e){if(typeof window.Element!="undefined"){var a=window.Element.prototype;if(a){var b="_"+(Math.random()+"").slice(2),c=document.createElement(e);a[b]="x";var d=c[b]!=="x";delete a[b];c=null;return d}}return false}function a(b,c){for(var a in c){var d=c[a];if(Object.isFunction(d)&&!(a in b))b[a]=d.methodize()}}var e=f("object");if(Prototype.BrowserFeatures.SpecificElementExtensions)return e?function(b){if(b&&typeof b._extendedByPrototype=="undefined"){var c=b.tagName;if(c&&/^(?:object|applet|embed)$/i.test(c)){a(b,Element.Methods);a(b,Element.Methods.Simulated);a(b,Element.Methods.ByTag[c.toUpperCase()])}}return b}:Prototype.K;var b={},d=Element.Methods.ByTag,c=Object.extend(function(c){if(!c||typeof c._extendedByPrototype!="undefined"||c.nodeType!=1||c==window)return c;var e=Object.clone(b),f=c.tagName.toUpperCase();d[f]&&Object.extend(e,d[f]);a(c,e);c._extendedByPrototype=Prototype.emptyFunction;return c},{refresh:function(){if(!Prototype.BrowserFeatures.ElementExtensions){Object.extend(b,Element.Methods);Object.extend(b,Element.Methods.Simulated)}}});c.refresh();return c}();if(document.documentElement.hasAttribute)Element.hasAttribute=function(b,a){return b.hasAttribute(a)};else Element.hasAttribute=Element.Methods.Simulated.hasAttribute;Element.addMethods=function(a){var h=Prototype.BrowserFeatures,j=Element.Methods.ByTag;if(!a){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),BUTTON:Object.clone(Form.Element.Methods)})}if(arguments.length==2){var b=a;a=arguments[1]}if(!b)Object.extend(Element.Methods,a||{});else if(Object.isArray(b))b.each(e);else e(b);function e(b){b=b.toUpperCase();if(!Element.Methods.ByTag[b])Element.Methods.ByTag[b]={};Object.extend(Element.Methods.ByTag[b],a)}function c(d,c,a){a=a||false;for(var b in d){var e=d[b];if(!Object.isFunction(e))continue;if(!a||!(b in c))c[b]=e.methodize()}}function i(b){var a,d={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(d[b])a="HTML"+d[b]+"Element";if(window[a])return window[a];a="HTML"+b+"Element";if(window[a])return window[a];a="HTML"+b.capitalize()+"Element";if(window[a])return window[a];var c=document.createElement(b),e=c.__proto__||c.constructor.prototype;c=null;return e}var d=window.HTMLElement?HTMLElement.prototype:Element.prototype;if(h.ElementExtensions){c(Element.Methods,d);c(Element.Methods.Simulated,d,true)}if(h.SpecificElementExtensions)for(var g in Element.Methods.ByTag){var f=i(g);if(Object.isUndefined(f))continue;c(j[g],f.prototype)}Object.extend(Element,Element.Methods);delete Element.ByTag;Element.extend.refresh&&Element.extend.refresh();Element.cache={}};document.viewport={getDimensions:function(){return{width:this.getWidth(),height:this.getHeight()}},getScrollOffsets:function(){return Element._returnOffset(window.pageXOffset||document.documentElement.scrollLeft||document.body.scrollLeft,window.pageYOffset||document.documentElement.scrollTop||document.body.scrollTop)}};(function(a){var e=Prototype.Browser,g=document,b,c={};function f(){return e.WebKit&&!g.evaluate?document:e.Opera&&window.parseFloat(window.opera.version())<9.5?document.body:document.documentElement}function d(d){if(!b)b=f();c[d]="client"+d;a["get"+d]=function(){return b[c[d]]};return a["get"+d]()}a.getWidth=d.curry("Width");a.getHeight=d.curry("Height")})(document.viewport);Element.Storage={UID:1};Element.addMethods({getStorage:function(a){if(!(a=$(a)))return;var b;if(a===window)b=0;else{if(typeof a._prototypeUID==="undefined")a._prototypeUID=Element.Storage.UID++;b=a._prototypeUID}if(!Element.Storage[b])Element.Storage[b]=$H();return Element.Storage[b]},store:function(a,b,c){if(!(a=$(a)))return;if(arguments.length===2)Element.getStorage(a).update(b);else Element.getStorage(a).set(b,c);return a},retrieve:function(a,e,c){if(!(a=$(a)))return;var d=Element.getStorage(a),b=d.get(e);if(Object.isUndefined(b)){d.set(e,c);b=c}return b},clone:function(a,d){if(!(a=$(a)))return;var b=a.cloneNode(d);b._prototypeUID=void 0;if(d){var c=Element.select(b,"*"),e=c.length;while(e--)c[e]._prototypeUID=void 0}return Element.extend(b)},purge:function(a){if(!(a=$(a)))return;var b=Element._purgeElement;b(a);var c=a.getElementsByTagName("*"),d=c.length;while(d--)b(c[d]);return null}});(function(){function r(b){var a=b.match(/^(\d+)%?$/i);return!a?null:Number(a[1])/100}function a(b,c,d){var a=null;if(Object.isElement(b)){a=b;b=a.getStyle(c)}if(b===null)return null;if(/^(?:-)?\d+(\.\d+)?(px)?$/i.test(b))return window.parseFloat(b);var g=b.include("%"),i=d===document.viewport;if(/\d/.test(b)&&a&&a.runtimeStyle&&!(g&&i)){var l=a.style.left,k=a.runtimeStyle.left;a.runtimeStyle.left=a.currentStyle.left;a.style.left=b||0;b=a.style.pixelLeft;a.style.left=l;a.runtimeStyle.left=k;return b}if(a&&g){d=d||a.parentNode;var j=r(b),e=null,m=a.getStyle("position"),f=c.include("left")||c.include("right")||c.include("width"),h=c.include("top")||c.include("bottom")||c.include("height");if(d===document.viewport){if(f)e=document.viewport.getWidth();else if(h)e=document.viewport.getHeight()}else if(f)e=$(d).measure("width");else if(h)e=$(d).measure("height");return e===null?0:e*j}return 0}function m(a){var c=a;while(a&&a.parentNode){var b=a.getStyle("display");if(b==="none")return false;a=$(a.parentNode)}return true}var c=Prototype.K;if("currentStyle"in document.documentElement)c=function(a){if(!a.currentStyle.hasLayout)a.style.zoom=1;return a};function o(a){if(a.include("border"))a=a+"-width";return a.camelize()}Element.Layout=Class.create(Hash,{initialize:function(c,b,a){c();this.element=$(b);Element.Layout.PROPERTIES.each(function(a){this._set(a,null)},this);if(a){this._preComputing=true;this._begin();Element.Layout.PROPERTIES.each(this._compute,this);this._end();this._preComputing=false}},_set:function(a,b){return Hash.prototype.set.call(this,a,b)},"set":function(){throw"Properties of Element.Layout are read-only.";},"get":function(c,a){var b=c(a);return b===null?this._compute(a):b},_begin:function(){if(this._prepared)return;var b=this.element;if(m(b)){this._prepared=true;return}var h={position:b.style.position||"",width:b.style.width||"",visibility:b.style.visibility||"",display:b.style.display||""};b.store("prototype_original_styles",h);var e=b.getStyle("position"),c=b.getStyle("width");if(c==="0px"||c===null){b.style.display="block";c=b.getStyle("width")}var f=e==="fixed"?document.viewport:b.parentNode;b.setStyle({position:"absolute",visibility:"hidden",display:"block"});var g=b.getStyle("width"),d;if(c&&g===c)d=a(b,"width",f);else if(e==="absolute"||e==="fixed")d=a(b,"width",f);else{var j=b.parentNode,i=$(j).getLayout();d=i.get("width")-this.get("margin-left")-this.get("border-left")-this.get("padding-left")-this.get("padding-right")-this.get("border-right")-this.get("margin-right")}b.setStyle({width:d+"px"});this._prepared=true},_end:function(){var a=this.element,b=a.retrieve("prototype_original_styles");a.store("prototype_original_styles",null);a.setStyle(b);this._prepared=false},_compute:function(a){var b=Element.Layout.COMPUTATIONS;if(!(a in b))throw"Property not found.";return this._set(a,b[a].call(this,this.element))},toObject:function(){var a=$A(arguments),c=a.length===0?Element.Layout.PROPERTIES:a.join(" ").split(" "),b={};c.each(function(a){if(!Element.Layout.PROPERTIES.include(a))return;var c=this.get(a);if(c!=null)b[a]=c},this);return b},toHash:function(){var a=this.toObject.apply(this,arguments);return new Hash(a)},toCSS:function(){var a=$A(arguments),c=a.length===0?Element.Layout.PROPERTIES:a.join(" ").split(" "),b={};c.each(function(a){if(!Element.Layout.PROPERTIES.include(a))return;if(Element.Layout.COMPOSITE_PROPERTIES.include(a))return;var c=this.get(a);if(c!=null)b[o(a)]=c+"px"},this);return b},inspect:function(){return"#<Element.Layout>"}});Object.extend(Element.Layout,{PROPERTIES:$w("height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height"),COMPOSITE_PROPERTIES:$w("padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height"),COMPUTATIONS:{height:function(){!this._preComputing&&this._begin();var a=this.get("border-box-height");if(a<=0){!this._preComputing&&this._end();return 0}var d=this.get("border-top"),b=this.get("border-bottom"),e=this.get("padding-top"),c=this.get("padding-bottom");!this._preComputing&&this._end();return a-d-b-e-c},width:function(){!this._preComputing&&this._begin();var a=this.get("border-box-width");if(a<=0){!this._preComputing&&this._end();return 0}var d=this.get("border-left"),b=this.get("border-right"),e=this.get("padding-left"),c=this.get("padding-right");!this._preComputing&&this._end();return a-d-b-e-c},"padding-box-height":function(){var b=this.get("height"),c=this.get("padding-top"),a=this.get("padding-bottom");return b+c+a},"padding-box-width":function(){var c=this.get("width"),b=this.get("padding-left"),a=this.get("padding-right");return c+b+a},"border-box-height":function(a){!this._preComputing&&this._begin();var b=a.offsetHeight;!this._preComputing&&this._end();return b},"border-box-width":function(a){!this._preComputing&&this._begin();var b=a.offsetWidth;!this._preComputing&&this._end();return b},"margin-box-height":function(){var a=this.get("border-box-height"),c=this.get("margin-top"),b=this.get("margin-bottom");return a<=0?0:a+c+b},"margin-box-width":function(){var a=this.get("border-box-width"),c=this.get("margin-left"),b=this.get("margin-right");return a<=0?0:a+c+b},top:function(a){var b=a.positionedOffset();return b.top},bottom:function(a){var d=a.positionedOffset(),e=a.getOffsetParent(),c=e.measure("height"),b=this.get("border-box-height");return c-b-d.top},left:function(a){var b=a.positionedOffset();return b.left},right:function(a){var c=a.positionedOffset(),d=a.getOffsetParent(),e=d.measure("width"),b=this.get("border-box-width");return e-b-c.left},"padding-top":function(b){return a(b,"paddingTop")},"padding-bottom":function(b){return a(b,"paddingBottom")},"padding-left":function(b){return a(b,"paddingLeft")},"padding-right":function(b){return a(b,"paddingRight")},"border-top":function(b){return a(b,"borderTopWidth")},"border-bottom":function(b){return a(b,"borderBottomWidth")},"border-left":function(b){return a(b,"borderLeftWidth")},"border-right":function(b){return a(b,"borderRightWidth")},"margin-top":function(b){return a(b,"marginTop")},"margin-bottom":function(b){return a(b,"marginBottom")},"margin-left":function(b){return a(b,"marginLeft")},"margin-right":function(b){return a(b,"marginRight")}}});"getBoundingClientRect"in document.documentElement&&Object.extend(Element.Layout.COMPUTATIONS,{right:function(a){var b=c(a.getOffsetParent()),e=a.getBoundingClientRect(),d=b.getBoundingClientRect();return(d.right-e.right).round()},bottom:function(a){var b=c(a.getOffsetParent()),e=a.getBoundingClientRect(),d=b.getBoundingClientRect();return(d.bottom-e.bottom).round()}});Element.Offset=Class.create({initialize:function(a,b){this.left=a.round();this.top=b.round();this[0]=this.left;this[1]=this.top},relativeTo:function(a){return new Element.Offset(this.left-a.left,this.top-a.top)},inspect:function(){return"#<Element.Offset left: #{left} top: #{top}>".interpolate(this)},toString:function(){return"[#{left}, #{top}]".interpolate(this)},toArray:function(){return[this.left,this.top]}});function q(b,a){return new Element.Layout(b,a)}function s(b,a){return $(b).getLayout().get(a)}function l(a){a=$(a);var e=Element.getStyle(a,"display");if(e&&e!=="none")return{width:a.offsetWidth,height:a.offsetHeight};var b=a.style,c={visibility:b.visibility,position:b.position,display:b.display},d={visibility:"hidden",display:"block"};if(c.position!=="fixed")d.position="absolute";Element.setStyle(a,d);var f={width:a.offsetWidth,height:a.offsetHeight};Element.setStyle(a,c);return f}function b(a){a=$(a);if(i(a)||e(a)||f(a)||g(a))return $(document.body);var b=Element.getStyle(a,"display")==="inline";if(!b&&a.offsetParent)return $(a.offsetParent);while((a=a.parentNode)&&a!==document.body)if(Element.getStyle(a,"position")!=="static")return g(a)?$(document.body):$(a);return $(document.body)}function h(a){a=$(a);var c=0,b=0;if(a.parentNode)do{c+=a.offsetTop||0;b+=a.offsetLeft||0;a=a.offsetParent}while(a);return new Element.Offset(b,c)}function d(a){a=$(a);var d=a.getLayout(),c=0,b=0;do{c+=a.offsetTop||0;b+=a.offsetLeft||0;a=a.offsetParent;if(a){if(f(a))break;var e=Element.getStyle(a,"position");if(e!=="static")break}}while(a);b-=d.get("margin-top");c-=d.get("margin-left");return new Element.Offset(b,c)}function j(a){var c=0,b=0;do{c+=a.scrollTop||0;b+=a.scrollLeft||0;a=a.parentNode}while(a);return new Element.Offset(b,c)}function k(d){a=$(a);var c=0,b=0,e=document.body,a=d;do{c+=a.offsetTop||0;b+=a.offsetLeft||0;if(a.offsetParent==e&&Element.getStyle(a,"position")=="absolute")break}while(a=a.offsetParent);a=d;do if(a!=e){c-=a.scrollTop||0;b-=a.scrollLeft||0}while(a=a.parentNode);return new Element.Offset(b,c)}function n(a){a=$(a);if(Element.getStyle(a,"position")==="absolute")return a;var e=b(a),f=a.viewportOffset(),g=e.viewportOffset(),d=f.relativeTo(g),c=a.getLayout();a.store("prototype_absolutize_original_styles",{left:a.getStyle("left"),top:a.getStyle("top"),width:a.getStyle("width"),height:a.getStyle("height")});a.setStyle({position:"absolute",top:d.top+"px",left:d.left+"px",width:c.get("width")+"px",height:c.get("height")+"px"});return a}function p(a){a=$(a);if(Element.getStyle(a,"position")==="relative")return a;var b=a.retrieve("prototype_absolutize_original_styles");b&&a.setStyle(b);return a}if(Prototype.Browser.IE){b=b.wrap(function(c,a){a=$(a);if(i(a)||e(a)||f(a)||g(a))return $(document.body);var b=a.getStyle("position");if(b!=="static")return c(a);a.setStyle({position:"relative"});var d=c(a);a.setStyle({position:b});return d});d=d.wrap(function(e,a){a=$(a);if(!a.parentNode)return new Element.Offset(0,0);var d=a.getStyle("position");if(d!=="static")return e(a);var b=a.getOffsetParent();b&&b.getStyle("position")==="fixed"&&c(b);a.setStyle({position:"relative"});var f=e(a);a.setStyle({position:d});return f})}else if(Prototype.Browser.Webkit)h=function(a){a=$(a);var c=0,b=0;do{c+=a.offsetTop||0;b+=a.offsetLeft||0;if(a.offsetParent==document.body)if(Element.getStyle(a,"position")=="absolute")break;a=a.offsetParent}while(a);return new Element.Offset(b,c)};Element.addMethods({getLayout:q,measure:s,getDimensions:l,getOffsetParent:b,cumulativeOffset:h,positionedOffset:d,cumulativeScrollOffset:j,viewportOffset:k,absolutize:n,relativize:p});function f(a){return a.nodeName.toUpperCase()==="BODY"}function g(a){return a.nodeName.toUpperCase()==="HTML"}function i(a){return a.nodeType===Node.DOCUMENT_NODE}function e(a){return a!==document.body&&!Element.descendantOf(a,document.body)}"getBoundingClientRect"in document.documentElement&&Element.addMethods({viewportOffset:function(a){a=$(a);if(e(a))return new Element.Offset(0,0);var c=a.getBoundingClientRect(),b=document.documentElement;return new Element.Offset(c.left-b.clientLeft,c.top-b.clientTop)}})})();window.$$=function(){var a=$A(arguments).join(", ");return Prototype.Selector.select(a,document)};Prototype.Selector=function(){function c(){throw new Error('Method "Prototype.Selector.select" must be defined.');}function d(){throw new Error('Method "Prototype.Selector.match" must be defined.');}function e(b,d,c){c=c||0;for(var g=Prototype.Selector.match,f=b.length,e=0,a=0;a<f;a++)if(g(b[a],d)&&c==e++)return Element.extend(b[a])}function b(a){for(var b=0,c=a.length;b<c;b++)Element.extend(a[b]);return a}var a=Prototype.K;return{select:c,match:d,find:e,extendElements:Element.extend===a?a:b,extendElement:Element.extend}}();
/*
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
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this.ycomp>=this.offset[1]&&this.ycomp<this.offset[1]+a.offsetHeight&&this.xcomp>=this.offset[0]&&this.xcomp<this.offset[0]+a.offsetWidth},overlap:function(b,a){return!b?0:b=="vertical"?(this.offset[1]+a.offsetHeight-this.ycomp)/a.offsetHeight:b=="horizontal"?(this.offset[0]+a.offsetWidth-this.xcomp)/a.offsetWidth:void 0},cumulativeOffset:Element.Methods.cumulativeOffset,positionedOffset:Element.Methods.positionedOffset,absolutize:function(a){Position.prepare();return Element.absolutize(a)},relativize:function(a){Position.prepare();return Element.relativize(a)},realOffset:Element.Methods.cumulativeScrollOffset,offsetParent:Element.Methods.getOffsetParent,page:Element.Methods.viewportOffset,clone:function(b,c,a){a=a||{};return Element.clonePosition(c,b,a)}};if(!document.getElementsByClassName)document.getElementsByClassName=function(b){function a(a){return a.blank()?null:"[contains(concat(' ', @class, ' '), ' "+a+" 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