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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(a,b){a=$(a),b=$(b);while(a=a.parentNode){if(a==b){return true}}return false},scrollTo:function(b){b=$(b);var a=Position.cumulativeOffset(b);window.scrollTo(a[0],a[1]);return b},getStyle:function(d,b){d=$(d);if(["float","cssFloat"].include(b)){b=(typeof d.style.styleFloat!="undefined"?"styleFloat":"cssFloat")}b=b.camelize();var a=d.style[b];if(!a){if(document.defaultView&&document.defaultView.getComputedStyle){var c=document.defaultView.getComputedStyle(d,null);a=c?c[b]:null}else{if(d.currentStyle){a=d.currentStyle[b]}}}if((a=="auto")&&["width","height"].include(b)&&(d.getStyle("display")!="none")){a=d["offset"+b.capitalize()]+"px"}if(window.opera&&["left","top","right","bottom"].include(b)){if(Element.getStyle(d,"position")=="static"){a="auto"}}if(b=="opacity"){if(a){return parseFloat(a)}if(a=(d.getStyle("filter")||"").match(/alpha\(opacity=(.*)\)/)){if(a[1]){return parseFloat(a[1])/100}}return 1}return a=="auto"?null:a},setStyle:function(c,b){c=$(c);for(var a in b){var d=b[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){c.style.filter=c.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")}}else{if(d==""){if(/MSIE/.test(navigator.userAgent)&&!window.opera){c.style.filter=c.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")}}else{if(d<1e-05){d=0}if(/MSIE/.test(navigator.userAgent)&&!window.opera){c.style.filter=c.getStyle("filter").replace(/alpha\([^\)]*\)/gi,"")+"alpha(opacity="+d*100+")"}}}}else{if(["float","cssFloat"].include(a)){a=(typeof c.style.styleFloat!="undefined")?"styleFloat":"cssFloat"}}c.style[a.camelize()]=d}return c},getDimensions:function(a){a=$(a);var e=$(a).getStyle("display");if(e!="none"&&e!=null){return{width:a.offsetWidth,height:a.offsetHeight}}var b=a.style;var c=b.visibility;var g=b.position;var f=b.display;b.visibility="hidden";b.position="absolute";b.display="block";var h=a.clientWidth;var d=a.clientHeight;b.display=f;b.position=g;b.visibility=c;return{width:h,height:d}},makePositioned:function(b){b=$(b);var a=Element.getStyle(b,"position");if(a=="static"||!a){b._madePositioned=true;b.style.position="relative";if(window.opera){b.style.top=0;b.style.left=0}}return b},undoPositioned:function(a){a=$(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(b,a){return b.getAttribute(a,2)},_flag:function(b,a){return $(b).hasAttribute(a)?a: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(c,a){var b=Element._attributeTranslations;a=b.names[a]||a;return $(c).getAttributeNode(a).specified}};if(document.all&&!window.opera){Element.Methods.update=function(c,b){c=$(c);b=typeof b=="undefined"?"":b.toString();var d=c.tagName.toUpperCase();if(["THEAD","TBODY","TR","TD"].include(d)){var a=document.createElement("div");switch(d){case"THEAD":case"TBODY":a.innerHTML="<table><tbody>"+b.stripScripts()+"</tbody></table>";depth=2;break;case"TR":a.innerHTML="<table><tbody><tr>"+b.stripScripts()+"</tr></tbody></table>";depth=3;break;case"TD":a.innerHTML="<table><tbody><tr><td>"+b.stripScripts()+"</td></tr></tbody></table>";depth=4}$A(c.childNodes).each(function(e){c.removeChild(e)});depth.times(function(){a=a.firstChild});$A(a.childNodes).each(function(e){c.appendChild(e)})}else{c.innerHTML=b.stripScripts()}setTimeout(function(){b.evalScripts()},10);return c}}Object.extend(Element,Element.Methods);var _nativeExtensions=false;if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){["","Form","Input","TextArea","Select"].each(function(a){var b="HTML"+a+"Element";if(window[b]){return}var c=window[b]={};c.prototype=document.createElement(a?a.toLowerCase():"div").__proto__})}Element.addMethods=function(a){Object.extend(Element.Methods,a||{});function b(f,e,g){g=g||false;var c=Element.extend.cache;for(var d in f){var h=f[d];if(!g||!(d in e)){e[d]=c.findOrStore(h)}}}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,a){this.element=$(b);this.content=a.stripScripts();if(this.adjacency&&this.element.insertAdjacentHTML){try{this.element.insertAdjacentHTML(this.adjacency,this.content)}catch(c){var d=this.element.tagName.toUpperCase();if(["TBODY","TR"].include(d)){this.insertContent(this.contentFromAnonymousTable())}else{throw c}}}else{this.range=this.element.ownerDocument.createRange();if(this.initializeRange){this.initializeRange()}this.insertContent([this.range.createContextualFragment(this.content)])}setTimeout(function(){a.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 c(h){throw"Parse error in selector: "+h}if(this.expression==""){c("empty expression")}var a=this.params,e=this.expression,d,b,f,g;while(d=e.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)){a.attributes=a.attributes||[];a.attributes.push({name:d[2],operator:d[3],value:d[4]||d[5]||""});e=d[1]}if(e=="*"){return this.params.wildcard=true}while(d=e.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)){b=d[1],f=d[2],g=d[3];switch(b){case"#":a.id=f;break;case".":a.classNames.push(f);break;case"":case undefined:a.tagName=f.toUpperCase();break;default:c(e.inspect())}e=g}if(e.length>0){c(e.inspect())}},buildMatchExpression:function(){var a=this.params,b=[],d;if(a.wildcard){b.push("true")}if(d=a.id){b.push('element.readAttribute("id") == '+d.inspect())}if(d=a.tagName){b.push("element.tagName.toUpperCase() == "+d.inspect())}if((d=a.classNames).length>0){for(var c=0,e=d.length;c<e;c++){b.push("element.hasClassName("+d[c].inspect()+")")}}if(d=a.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"=":b.push(h+" == "+f.value.inspect());break;case"~=":b.push(g(" ")+".include("+f.value.inspect()+")");break;case"|=":b.push(g("-")+".first().toUpperCase() == "+f.value.toUpperCase().inspect());break;case"!=":b.push(h+" != "+f.value.inspect());break;case"":case undefined:b.push("element.hasAttribute("+f.name.inspect()+")");break;default:throw"Unknown operator "+f.operator+" in selector"}})}return b.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 c=[];for(var a=0,d=e.length;a<d;a++){if(this.match(b=e[a])){c.push(Element.extend(b))}}return c},toString:function(){return this.expression}};Object.extend(Selector,{matchElements:function(a,c){var b=new Selector(c);return a.select(b.match.bind(b)).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(b,a){return a.map(function(c){return c.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null],function(f,d){var e=new Selector(d);return f.inject([],function(h,g){return h.concat(e.findElements(g||b))})})}).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(f,g){if(!g.disabled&&g.name){var e=g.name,d=$(g).getValue();if(d!=undefined){if(f[e]){if(f[e].constructor!=Array){f[e]=[f[e]]}f[e].push(d)}else{f[e]=d}}}return f});return b?c:Hash.toQueryString(c)}};Form.Methods={serialize:function(a,b){return Form.serializeElements(Form.getElements(a),b)},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(e,b,f){e=$(e);var g=e.getElementsByTagName("input");if(!b&&!f){return $A(g).map(Element.extend)}for(var a=0,d=[],h=g.length;a<h;a++){var c=g[a];if((b&&c.type!=b)||(f&&c.name!=f)){continue}d.push(Element.extend(c))}return d},disable:function(a){a=$(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(c){c=$(c);if(!c.disabled&&c.name){var b=c.getValue();if(b!=undefined){var a={};a[c.name]=b;return Hash.toQueryString(a)}}return""},getValue:function(b){b=$(b);var a=b.tagName.toLowerCase();return Form.Element.Serializers[a](b)},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 $F=Form.Element.getValue;Form.Element.Serializers={input:function(a){switch(a.type.toLowerCase()){case"checkbox":case"radio":return Form.Element.Serializers.inputSelector(a);default:return Form.Element.Serializers.textarea(a)}},inputSelector:function(a){return a.checked?a.value:null},textarea:function(a){return a.value},select:function(a){return this[a.type=="select-one"?"selectOne":"selectMany"](a)},selectOne:function(a){var b=a.selectedIndex;return b>=0?this.optionValue(a.options[b]):null},selectMany:function(c){var d,a=c.length;if(!a){return null}for(var b=0,d=[];b<a;b++){var e=c.options[b];if(e.selected){d.push(this.optionValue(e))}}return d},optionValue:function(a){return Element.extend(a).hasAttribute("value")?a.value:a.text}};Abstract.TimedObserver=function(){};Abstract.TimedObserver.prototype={initialize:function(b,a,c){this.frequency=a;this.element=$(b);this.callback=c;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(a,c){var b=Event.element(a);while(b.parentNode&&(!b.tagName||(b.tagName.toUpperCase()!=c.toUpperCase()))){b=b.parentNode}return b},observers:false,_observeAndCache:function(d,a,b,c){if(!this.observers){this.observers=[]}if(d.addEventListener){this.observers.push([d,a,b,c]);d.addEventListener(a,b,c)}else{if(d.attachEvent){this.observers.push([d,a,b,c]);d.attachEvent("on"+a,b)}}},unloadCache:function(){if(!Event.observers){return}for(var a=0,b=Event.observers.length;a<b;a++){Event.stopObserving.apply(this,Event.observers[a]);Event.observers[a][0]=null}Event.observers=false},observe:function(d,a,b,c){d=$(d);c=c||false;if(a=="keypress"&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||d.attachEvent)){a="keydown"}Event._observeAndCache(d,a,b,c)},stopObserving:function(d,a,b,c){d=$(d);c=c||false;if(a=="keypress"&&(navigator.appVersion.match(/Konqueror|Safari|KHTML/)||d.detachEvent)){a="keydown"}if(d.removeEventListener){d.removeEventListener(a,b,c)}else{if(d.detachEvent){try{d.detachEvent("on"+a,b)}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(c){var a=0,b=0;do{a+=c.scrollTop||0;b+=c.scrollLeft||0;c=c.parentNode}while(c);return[b,a]},cumulativeOffset:function(c){var a=0,b=0;do{a+=c.offsetTop||0;b+=c.offsetLeft||0;c=c.offsetParent}while(c);return[b,a]},positionedOffset:function(c){var a=0,b=0;do{a+=c.offsetTop||0;b+=c.offsetLeft||0;c=c.offsetParent;if(c){if(c.tagName=="BODY"){break}var d=Element.getStyle(c,"position");if(d=="relative"||d=="absolute"){break}}}while(c);return[b,a]},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(c,a,b){if(this.includeScrollOffsets){return this.withinIncludingScrolloffsets(c,a,b)}this.xcomp=a;this.ycomp=b;this.offset=this.cumulativeOffset(c);return(b>=this.offset[1]&&b<this.offset[1]+c.offsetHeight&&a>=this.offset[0]&&a<this.offset[0]+c.offsetWidth)},withinIncludingScrolloffsets:function(d,b,c){var a=this.realOffset(d);this.xcomp=b+a[0]-this.deltaX;this.ycomp=c+a[1]-this.deltaY;this.offset=this.cumulativeOffset(d);return(this.ycomp>=this.offset[1]&&this.ycomp<this.offset[1]+d.offsetHeight&&this.xcomp>=this.offset[0]&&this.xcomp<this.offset[0]+d.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(a){var b=0,c=0;var d=a;do{b+=d.offsetTop||0;c+=d.offsetLeft||0;if(d.offsetParent==document.body){if(Element.getStyle(d,"position")=="absolute"){break}}}while(d=d.offsetParent);d=a;do{if(!window.opera||d.tagName=="BODY"){b-=d.scrollTop||0;c-=d.scrollLeft||0}}while(d=d.parentNode);return[c,b]},clone:function(d,c){var e=Object.extend({setLeft:true,setTop:true,setWidth:true,setHeight:true,offsetTop:0,offsetLeft:0},arguments[2]||{});d=$(d);var f=Position.page(d);c=$(c);var a=[0,0];var b=null;if(Element.getStyle(c,"position")=="absolute"){b=Position.offsetParent(c);a=Position.page(b)}if(b==document.body){a[0]-=document.body.offsetLeft;a[1]-=document.body.offsetTop}if(e.setLeft){c.style.left=(f[0]-a[0]+e.offsetLeft)+"px"}if(e.setTop){c.style.top=(f[1]-a[1]+e.offsetTop)+"px"}if(e.setWidth){c.style.width=d.offsetWidth+"px"}if(e.setHeight){c.style.height=d.offsetHeight+"px"}},absolutize:function(e){e=$(e);if(e.style.position=="absolute"){return}Position.prepare();var f=Position.positionedOffset(e);var b=f[1];var d=f[0];var c=e.clientWidth;var a=e.clientHeight;e._originalLeft=d-parseFloat(e.style.left||0);e._originalTop=b-parseFloat(e.style.top||0);e._originalWidth=e.style.width;e._originalHeight=e.style.height;e.style.position="absolute";e.style.top=b+"px";e.style.left=d+"px";e.style.width=c+"px";e.style.height=a+"px"},relativize:function(c){c=$(c);if(c.style.position=="relative"){return}Position.prepare();c.style.position="relative";var a=parseFloat(c.style.top||0)-(c._originalTop||0);var b=parseFloat(c.style.left||0)-(c._originalLeft||0);c.style.top=a+"px";c.style.left=b+"px";c.style.height=c._originalHeight;c.style.width=c._originalWidth}};if(/Konqueror|Safari|KHTML/.test(navigator.userAgent)){Position.cumulativeOffset=function(c){var a=0,b=0;do{a+=c.offsetTop||0;b+=c.offsetLeft||0;if(c.offsetParent==document.body){if(Element.getStyle(c,"position")=="absolute"){break}}c=c.offsetParent}while(c);return[b,a]}}Element.addMethods();