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a=c.nextSibling;if(c.nodeType==3&&!/\S/.test(c.nodeValue)){b.removeChild(c)}c=a}return b},empty:function(a){return $(a).innerHTML.match(/^\s*$/)},descendantOf:function(b,a){b=$(b),a=$(a);while(b=b.parentNode){if(b==a){return true}}return false},scrollTo:function(a){a=$(a);var b=Position.cumulativeOffset(a);window.scrollTo(b[0],b[1]);return a},getStyle:function(a,c){a=$(a);if(["float","cssFloat"].include(c)){c=(typeof a.style.styleFloat!="undefined"?"styleFloat":"cssFloat")}c=c.camelize();var d=a.style[c];if(!d){if(document.defaultView&&document.defaultView.getComputedStyle){var b=document.defaultView.getComputedStyle(a,null);d=b?b[c]:null}else{if(a.currentStyle){d=a.currentStyle[c]}}}if((d=="auto")&&["width","height"].include(c)&&(a.getStyle("display")!="none")){d=a["offset"+c.capitalize()]+"px"}if(window.opera&&["left","top","right","bottom"].include(c)){if(Element.getStyle(a,"position")=="static"){d="auto"}}if(c=="opacity"){if(d){return parseFloat(d)}if(d=(a.getStyle("filter")||"").match(/alpha\(opacity=(.*)\)/)){if(d[1]){return parseFloat(d[1])/100}}return 1}return d=="auto"?null:d},setStyle:function(b,c){b=$(b);for(var a in c){var d=c[a];if(a=="opacity"){if(d==1){d=(/Gecko/.test(navigator.userAgent)&&!/Konqueror|Safari|KHTML/.test(navigator.userAgent))?0.999999:1;if(/MSIE/.test(navigator.userAgent)&&!window.opera){b.style.filter=b.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")}}else{if(d==""){if(/MSIE/.test(navigator.userAgent)&&!window.opera){b.style.filter=b.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")}}else{if(d<0.00001){d=0}if(/MSIE/.test(navigator.userAgent)&&!window.opera){b.style.filter=b.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")+"alpha(opacity="+d*100+")"}}}}else{if(["float","cssFloat"].include(a)){a=(typeof b.style.styleFloat!="undefined")?"styleFloat":"cssFloat"}}b.style[a.camelize()]=d}return b},getDimensions:function(c){c=$(c);var g=$(c).getStyle("display");if(g!="none"&&g!=null){return{width:c.offsetWidth,height:c.offsetHeight}}var e=c.style;var a=e.visibility;var b=e.position;var d=e.display;e.visibility="hidden";e.position="absolute";e.display="block";var h=c.clientWidth;var f=c.clientHeight;e.display=d;e.position=b;e.visibility=a;return{width:h,height:f}},makePositioned:function(a){a=$(a);var b=Element.getStyle(a,"position");if(b=="static"||!b){a._madePositioned=true;a.style.position="relative";if(window.opera){a.style.top=0;a.style.left=0}}return a},undoPositioned:function(a){a=$(a);if(a._madePositioned){a._madePositioned=undefined;a.style.position=a.style.top=a.style.left=a.style.bottom=a.style.right=""}return a},makeClipping:function(a){a=$(a);if(a._overflow){return a}a._overflow=a.style.overflow||"auto";if((Element.getStyle(a,"overflow")||"visible")!="hidden"){a.style.overflow="hidden"}return a},undoClipping:function(a){a=$(a);if(!a._overflow){return a}a.style.overflow=a._overflow=="auto"?"":a._overflow;a._overflow=null;return a}};Object.extend(Element.Methods,{childOf:Element.Methods.descendantOf});Element._attributeTranslations={};Element._attributeTranslations.names={colspan:"colSpan",rowspan:"rowSpan",valign:"vAlign",datetime:"dateTime",accesskey:"accessKey",tabindex:"tabIndex",enctype:"encType",maxlength:"maxLength",readonly:"readOnly",longdesc:"longDesc"};Element._attributeTranslations.values={_getAttr:function(a,b){return a.getAttribute(b,2)},_flag:function(a,b){return $(a).hasAttribute(b)?b:null},style:function(a){return a.style.cssText.toLowerCase()},title:function(a){var b=a.getAttributeNode("title");return b.specified?b.nodeValue:null}};Object.extend(Element._attributeTranslations.values,{href:Element._attributeTranslations.values._getAttr,src:Element._attributeTranslations.values._getAttr,disabled:Element._attributeTranslations.values._flag,checked:Element._attributeTranslations.values._flag,readonly:Element._attributeTranslations.values._flag,multiple:Element._attributeTranslations.values._flag});Element.Methods.Simulated={hasAttribute:function(a,c){var b=Element._attributeTranslations;c=b.names[c]||c;return $(a).getAttributeNode(c).specified}};if(document.all&&!window.opera){Element.Methods.update=function(b,c){b=$(b);c=typeof c=="undefined"?"":c.toString();var a=b.tagName.toUpperCase();if(["THEAD","TBODY","TR","TD"].include(a)){var d=document.createElement("div");switch(a){case"THEAD":case"TBODY":d.innerHTML="<table><tbody>"+c.stripScripts()+"</tbody></table>";depth=2;break;case"TR":d.innerHTML="<table><tbody><tr>"+c.stripScripts()+"</tr></tbody></table>";depth=3;break;case"TD":d.innerHTML="<table><tbody><tr><td>"+c.stripScripts()+"</td></tr></tbody></table>";depth=4}$A(b.childNodes).each(function(e){b.removeChild(e)});depth.times(function(){d=d.firstChild});$A(d.childNodes).each(function(e){b.appendChild(e)})}else{b.innerHTML=c.stripScripts()}setTimeout(function(){c.evalScripts()},10);return b}}Object.extend(Element,Element.Methods);var _nativeExtensions=false;if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){["","Form","Input","TextArea","Select"].each(function(b){var c="HTML"+b+"Element";if(window[c]){return}var a=window[c]={};a.prototype=document.createElement(b?b.toLowerCase():"div").__proto__})}Element.addMethods=function(a){Object.extend(Element.Methods,a||{});function b(e,h,g){g=g||false;var d=Element.extend.cache;for(var c in e){var f=e[c];if(!g||!(c in h)){h[c]=d.findOrStore(f)}}}if(typeof HTMLElement!="undefined"){b(Element.Methods,HTMLElement.prototype);b(Element.Methods.Simulated,HTMLElement.prototype,true);b(Form.Methods,HTMLFormElement.prototype);[HTMLInputElement,HTMLTextAreaElement,HTMLSelectElement].each(function(c){b(Form.Element.Methods,c.prototype)});_nativeExtensions=true}};var Toggle=new Object();Toggle.display=Element.toggle;Abstract.Insertion=function(a){this.adjacency=a};Abstract.Insertion.prototype={initialize:function(b,c){this.element=$(b);this.content=c.stripScripts();if(this.adjacency&&this.element.insertAdjacentHTML){try{this.element.insertAdjacentHTML(this.adjacency,this.content)}catch(d){var a=this.element.tagName.toUpperCase();if(["TBODY","TR"].include(a)){this.insertContent(this.contentFromAnonymousTable())}else{throw d}}}else{this.range=this.element.ownerDocument.createRange();if(this.initializeRange){this.initializeRange()}this.insertContent([this.range.createContextualFragment(this.content)])}setTimeout(function(){c.evalScripts()},10)},contentFromAnonymousTable:function(){var a=document.createElement("div");a.innerHTML="<table><tbody>"+this.content+"</tbody></table>";return $A(a.childNodes[0].childNodes[0].childNodes)}};var Insertion=new Object();Insertion.Before=Class.create();Insertion.Before.prototype=Object.extend(new Abstract.Insertion("beforeBegin"),{initializeRange:function(){this.range.setStartBefore(this.element)},insertContent:function(a){a.each((function(b){this.element.parentNode.insertBefore(b,this.element)}).bind(this))}});Insertion.Top=Class.create();Insertion.Top.prototype=Object.extend(new Abstract.Insertion("afterBegin"),{initializeRange:function(){this.range.selectNodeContents(this.element);this.range.collapse(true)},insertContent:function(a){a.reverse(false).each((function(b){this.element.insertBefore(b,this.element.firstChild)}).bind(this))}});Insertion.Bottom=Class.create();Insertion.Bottom.prototype=Object.extend(new Abstract.Insertion("beforeEnd"),{initializeRange:function(){this.range.selectNodeContents(this.element);this.range.collapse(this.element)},insertContent:function(a){a.each((function(b){this.element.appendChild(b)}).bind(this))}});Insertion.After=Class.create();Insertion.After.prototype=Object.extend(new Abstract.Insertion("afterEnd"),{initializeRange:function(){this.range.setStartAfter(this.element)},insertContent:function(a){a.each((function(b){this.element.parentNode.insertBefore(b,this.element.nextSibling)}).bind(this))}});Element.ClassNames=Class.create();Element.ClassNames.prototype={initialize:function(a){this.element=$(a)},_each:function(a){this.element.className.split(/\s+/).select(function(b){return b.length>0})._each(a)},set:function(a){this.element.className=a},add:function(a){if(this.include(a)){return}this.set($A(this).concat(a).join(" "))},remove:function(a){if(!this.include(a)){return}this.set($A(this).without(a).join(" "))},toString:function(){return $A(this).join(" ")}};Object.extend(Element.ClassNames.prototype,Enumerable);var Selector=Class.create();Selector.prototype={initialize:function(a){this.params={classNames:[]};this.expression=a.toString().strip();this.parseExpression();this.compileMatcher()},parseExpression:function(){function g(h){throw"Parse error in selector: "+h}if(this.expression==""){g("empty expression")}var e=this.params,d=this.expression,a,c,f,b;while(a=d.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)){e.attributes=e.attributes||[];e.attributes.push({name:a[2],operator:a[3],value:a[4]||a[5]||""});d=a[1]}if(d=="*"){return this.params.wildcard=true}while(a=d.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)){c=a[1],f=a[2],b=a[3];switch(c){case"#":e.id=f;break;case".":e.classNames.push(f);break;case"":case undefined:e.tagName=f.toUpperCase();break;default:g(d.inspect())}d=b}if(d.length>0){g(d.inspect())}},buildMatchExpression:function(){var c=this.params,e=[],d;if(c.wildcard){e.push("true")}if(d=c.id){e.push('element.readAttribute("id") == '+d.inspect())}if(d=c.tagName){e.push("element.tagName.toUpperCase() == "+d.inspect())}if((d=c.classNames).length>0){for(var b=0,a=d.length;b<a;b++){e.push("element.hasClassName("+d[b].inspect()+")")}}if(d=c.attributes){d.each(function(f){var h="element.readAttribute("+f.name.inspect()+")";var g=function(i){return h+" && "+h+".split("+i.inspect()+")"};switch(f.operator){case"=":e.push(h+" == "+f.value.inspect());break;case"~=":e.push(g(" ")+".include("+f.value.inspect()+")");break;case"|=":e.push(g("-")+".first().toUpperCase() == "+f.value.toUpperCase().inspect());break;case"!=":e.push(h+" != "+f.value.inspect());break;case"":case undefined:e.push("element.hasAttribute("+f.name.inspect()+")");break;default:throw"Unknown operator "+f.operator+" in selector"}})}return e.join(" && ")},compileMatcher:function(){this.match=new Function("element","if (!element.tagName) return false;       element = $(element);       return "+this.buildMatchExpression())},findElements:function(e){var b;if(b=$(this.params.id)){if(this.match(b)){if(!e||Element.childOf(b,e)){return[b]}}}e=(e||document).getElementsByTagName(this.params.tagName||"*");var d=[];for(var c=0,a=e.length;c<a;c++){if(this.match(b=e[c])){d.push(Element.extend(b))}}return d},toString:function(){return this.expression}};Object.extend(Selector,{matchElements:function(b,c){var a=new Selector(c);return b.select(a.match.bind(a)).map(Element.extend)},findElement:function(a,c,b){if(typeof c=="number"){b=c,c=false}return Selector.matchElements(a,c||"*")[b||0]},findChildElements:function(a,b){return b.map(function(c){return c.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null],function(e,f){var d=new Selector(f);return e.inject([],function(g,h){return g.concat(d.findElements(h||a))})})}).flatten()}});function $$(){return Selector.findChildElements(document,$A(arguments))}var Form={reset:function(a){$(a).reset();return a},serializeElements:function(a,b){var c=a.inject({},function(g,d){if(!d.disabled&&d.name){var e=d.name,f=$(d).getValue();if(f!=undefined){if(g[e]){if(g[e].constructor!=Array){g[e]=[g[e]]}g[e].push(f)}else{g[e]=f}}}return g});return b?c:Hash.toQueryString(c)}};Form.Methods={serialize:function(b,a){return Form.serializeElements(Form.getElements(b),a)},getElements:function(a){return $A($(a).getElementsByTagName("*")).inject([],function(b,c){if(Form.Element.Serializers[c.tagName.toLowerCase()]){b.push(Element.extend(c))}return b})},getInputs:function(g,e,c){g=$(g);var f=g.getElementsByTagName("input");if(!e&&!c){return $A(f).map(Element.extend)}for(var d=0,h=[],a=f.length;d<a;d++){var b=f[d];if((e&&b.type!=e)||(c&&b.name!=c)){continue}h.push(Element.extend(b))}return h},disable:function(a){a=$(a);a.getElements().each(function(b){b.blur();b.disabled="true"});return a},enable:function(a){a=$(a);a.getElements().each(function(b){b.disabled=""});return a},findFirstElement:function(a){return $(a).getElements().find(function(b){return b.type!="hidden"&&!b.disabled&&["input","select","textarea"].include(b.tagName.toLowerCase())})},focusFirstElement:function(a){a=$(a);a.findFirstElement().activate();return a}};Object.extend(Form,Form.Methods);Form.Element={focus:function(a){$(a).focus();return a},select:function(a){$(a).select();return a}};Form.Element.Methods={serialize:function(a){a=$(a);if(!a.disabled&&a.name){var b=a.getValue();if(b!=undefined){var c={};c[a.name]=b;return Hash.toQueryString(c)}}return""},getValue:function(a){a=$(a);var b=a.tagName.toLowerCase();return Form.Element.Serializers[b](a)},clear:function(a){$(a).value="";return a},present:function(a){return $(a).value!=""},activate:function(a){a=$(a);a.focus();if(a.select&&(a.tagName.toLowerCase()!="input"||!["button","reset","submit"].include(a.type))){a.select()}return a},disable:function(a){a=$(a);a.disabled=true;return a},enable:function(a){a=$(a);a.blur();a.disabled=false;return a}};Object.extend(Form.Element,Form.Element.Methods);var Field=Form.Element;var $F=Form.Element.getValue;Form.Element.Serializers={input:function(a){switch(a.type.toLowerCase()){case"checkbox":case"radio":return Form.Element.Serializers.inputSelector(a);default:return Form.Element.Serializers.textarea(a)}},inputSelector:function(a){return a.checked?a.value:null},textarea:function(a){return a.value},select:function(a){return this[a.type=="select-one"?"selectOne":"selectMany"](a)},selectOne:function(b){var a=b.selectedIndex;return a>=0?this.optionValue(b.options[a]):null},selectMany:function(b){var e,a=b.length;if(!a){return null}for(var d=0,e=[];d<a;d++){var c=b.options[d];if(c.selected){e.push(this.optionValue(c))}}return e},optionValue:function(a){return Element.extend(a).hasAttribute("value")?a.value:a.text}};Abstract.TimedObserver=function(){};Abstract.TimedObserver.prototype={initialize:function(a,c,b){this.frequency=c;this.element=$(a);this.callback=b;this.lastValue=this.getValue();this.registerCallback()},registerCallback:function(){setInterval(this.onTimerEvent.bind(this),this.frequency*1000)},onTimerEvent:function(){var a=this.getValue();var b=("string"==typeof this.lastValue&&"string"==typeof a?this.lastValue!=a:String(this.lastValue)!=String(a));if(b){this.callback(this.element,a);this.lastValue=a}}};Form.Element.Observer=Class.create();Form.Element.Observer.prototype=Object.extend(new Abstract.TimedObserver(),{getValue:function(){return Form.Element.getValue(this.element)}});Form.Observer=Class.create();Form.Observer.prototype=Object.extend(new Abstract.TimedObserver(),{getValue:function(){return Form.serialize(this.element)}});Abstract.EventObserver=function(){};Abstract.EventObserver.prototype={initialize:function(a,b){this.element=$(a);this.callback=b;this.lastValue=this.getValue();if(this.element.tagName.toLowerCase()=="form"){this.registerFormCallbacks()}else{this.registerCallback(this.element)}},onElementEvent:function(){var a=this.getValue();if(this.lastValue!=a){this.callback(this.element,a);this.lastValue=a}},registerFormCallbacks:function(){Form.getElements(this.element).each(this.registerCallback.bind(this))},registerCallback:function(a){if(a.type){switch(a.type.toLowerCase()){case"checkbox":case"radio":Event.observe(a,"click",this.onElementEvent.bind(this));break;default:Event.observe(a,"change",this.onElementEvent.bind(this));break}}}};Form.Element.EventObserver=Class.create();Form.Element.EventObserver.prototype=Object.extend(new Abstract.EventObserver(),{getValue:function(){return Form.Element.getValue(this.element)}});Form.EventObserver=Class.create();Form.EventObserver.prototype=Object.extend(new Abstract.EventObserver(),{getValue:function(){return Form.serialize(this.element)}});if(!window.Event){var Event=new Object()}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,element:function(a){return a.target||a.srcElement},isLeftClick:function(a){return(((a.which)&&(a.which==1))||((a.button)&&(a.button==1)))},pointerX:function(a){return a.pageX||(a.clientX+(document.documentElement.scrollLeft||document.body.scrollLeft))},pointerY:function(a){return a.pageY||(a.clientY+(document.documentElement.scrollTop||document.body.scrollTop))},stop:function(a){if(a.preventDefault){a.preventDefault();a.stopPropagation()}else{a.returnValue=false;a.cancelBubble=true}},findElement:function(c,b){var a=Event.element(c);while(a.parentNode&&(!a.tagName||(a.tagName.toUpperCase()!=b.toUpperCase()))){a=a.parentNode}return a},observers:false,_observeAndCache:function(c,b,a,d){if(!this.observers){this.observers=[]}if(c.addEventListener){this.observers.push([c,b,a,d]);c.addEventListener(b,a,d)}else{if(c.attachEvent){this.observers.push([c,b,a,d]);c.attachEvent("on"+b,a)}}},unloadCache:function(){if(!Event.observers){return}for(var b=0,a=Event.observers.length;b<a;b++){Event.stopObserving.apply(this,Event.observers[b]);Event.observers[b][0]=null}Event.observers=false},observe:function(c,b,a,d){c=$(c);d=d||false;if(b=="keypress"&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||c.attachEvent)){b="keydown"}Event._observeAndCache(c,b,a,d)},stopObserving:function(c,b,a,d){c=$(c);d=d||false;if(b=="keypress"&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||c.detachEvent)){b="keydown"}if(c.removeEventListener){c.removeEventListener(b,a,d)}else{if(c.detachEvent){try{c.detachEvent("on"+b,a)}catch(f){}}}}});if(navigator.appVersion.match(/\bMSIE\b/)){Event.observe(window,"unload",Event.unloadCache,false)}var Position={includeScrollOffsets:false,prepare:function(){this.deltaX=window.pageXOffset||document.documentElement.scrollLeft||document.body.scrollLeft||0;this.deltaY=window.pageYOffset||document.documentElement.scrollTop||document.body.scrollTop||0},realOffset:function(a){var b=0,c=0;do{b+=a.scrollTop||0;c+=a.scrollLeft||0;a=a.parentNode}while(a);return[c,b]},cumulativeOffset:function(a){var b=0,c=0;do{b+=a.offsetTop||0;c+=a.offsetLeft||0;a=a.offsetParent}while(a);return[c,b]},positionedOffset:function(a){var b=0,d=0;do{b+=a.offsetTop||0;d+=a.offsetLeft||0;a=a.offsetParent;if(a){if(a.tagName=="BODY"){break}var c=Element.getStyle(a,"position");if(c=="relative"||c=="absolute"){break}}}while(a);return[d,b]},offsetParent:function(a){if(a.offsetParent){return a.offsetParent}if(a==document.body){return a}while((a=a.parentNode)&&a!=document.body){if(Element.getStyle(a,"position")!="static"){return a}}return document.body},within:function(b,a,c){if(this.includeScrollOffsets){return this.withinIncludingScrolloffsets(b,a,c)}this.xcomp=a;this.ycomp=c;this.offset=this.cumulativeOffset(b);return(c>=this.offset[1]&&c<this.offset[1]+b.offsetHeight&&a>=this.offset[0]&&a<this.offset[0]+b.offsetWidth)},withinIncludingScrolloffsets:function(b,a,d){var c=this.realOffset(b);this.xcomp=a+c[0]-this.deltaX;this.ycomp=d+c[1]-this.deltaY;this.offset=this.cumulativeOffset(b);return(this.ycomp>=this.offset[1]&&this.ycomp<this.offset[1]+b.offsetHeight&&this.xcomp>=this.offset[0]&&this.xcomp<this.offset[0]+b.offsetWidth)},overlap:function(b,a){if(!b){return 0}if(b=="vertical"){return((this.offset[1]+a.offsetHeight)-this.ycomp)/a.offsetHeight}if(b=="horizontal"){return((this.offset[0]+a.offsetWidth)-this.xcomp)/a.offsetWidth}},page:function(c){var b=0,d=0;var a=c;do{b+=a.offsetTop||0;d+=a.offsetLeft||0;if(a.offsetParent==document.body){if(Element.getStyle(a,"position")=="absolute"){break}}}while(a=a.offsetParent);a=c;do{if(!window.opera||a.tagName=="BODY"){b-=a.scrollTop||0;d-=a.scrollLeft||0}}while(a=a.parentNode);return[d,b]},clone:function(a,f){var c=Object.extend({setLeft:true,setTop:true,setWidth:true,setHeight:true,offsetTop:0,offsetLeft:0},arguments[2]||{});a=$(a);var d=Position.page(a);f=$(f);var e=[0,0];var b=null;if(Element.getStyle(f,"position")=="absolute"){b=Position.offsetParent(f);e=Position.page(b)}if(b==document.body){e[0]-=document.body.offsetLeft;e[1]-=document.body.offsetTop}if(c.setLeft){f.style.left=(d[0]-e[0]+c.offsetLeft)+"px"}if(c.setTop){f.style.top=(d[1]-e[1]+c.offsetTop)+"px"}if(c.setWidth){f.style.width=a.offsetWidth+"px"}if(c.setHeight){f.style.height=a.offsetHeight+"px"}},absolutize:function(b){b=$(b);if(b.style.position=="absolute"){return}Position.prepare();var a=Position.positionedOffset(b);var f=a[1];var e=a[0];var c=b.clientWidth;var d=b.clientHeight;b._originalLeft=e-parseFloat(b.style.left||0);b._originalTop=f-parseFloat(b.style.top||0);b._originalWidth=b.style.width;b._originalHeight=b.style.height;b.style.position="absolute";b.style.top=f+"px";b.style.left=e+"px";b.style.width=c+"px";b.style.height=d+"px"},relativize:function(a){a=$(a);if(a.style.position=="relative"){return}Position.prepare();a.style.position="relative";var c=parseFloat(a.style.top||0)-(a._originalTop||0);var b=parseFloat(a.style.left||0)-(a._originalLeft||0);a.style.top=c+"px";a.style.left=b+"px";a.style.height=a._originalHeight;a.style.width=a._originalWidth}};if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){Position.cumulativeOffset=function(a){var b=0,c=0;do{b+=a.offsetTop||0;c+=a.offsetLeft||0;if(a.offsetParent==document.body){if(Element.getStyle(a,"position")=="absolute"){break}}a=a.offsetParent}while(a);return[c,b]}}Element.addMethods();