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a,c={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(c[b])a="HTML"+c[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];window[a]={};window[a].prototype=document.createElement(b).__proto__;return window[a]}if(g.ElementExtensions){c(Element.Methods,HTMLElement.prototype);c(Element.Methods.Simulated,HTMLElement.prototype,true)}if(g.SpecificElementExtensions)for(var f in Element.Methods.ByTag){var e=h(f);if(typeof 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Insertion={};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(a){this.element.parentNode.insertBefore(a,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(a){this.element.insertBefore(a,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(a){this.element.appendChild(a)}.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(a){this.element.parentNode.insertBefore(a,this.element.nextSibling)}.bind(this))}});Element.ClassNames=Class.create();Element.ClassNames.prototype={initialize:function(a){this.element=$(a)},_each:function(a){this.element.className.split(/\s+/).select(function(a){return a.length>0})._each(a)},"set":function(a){this.element.className=a},add:function(a){if(this.include(a))return;this.set($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(" 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a=this.expression,f=Selector.patterns,d=Selector.xpath,e,c;if(Selector._cache[a]){this.xpath=Selector._cache[a];return}this.matcher=[".//*"];while(a&&e!=a&&/\S/.test(a)){e=a;for(var b in f)if(c=a.match(f[b])){this.matcher.push(typeof d[b]=="function"?d[b](c):(new Template(d[b])).evaluate(c));a=a.replace(c[0],"");break}}this.xpath=this.matcher.join("");Selector._cache[this.expression]=this.xpath},findElements:function(a){a=a||document;if(this.xpath)return document._getElementsByXPath(this.xpath,a);return this.matcher(a)},match:function(a){return this.findElements(document).include(a)},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(a){if(a[1]=="*")return "";return "[local-name()='"+a[1].toLowerCase()+"' or 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'')]",checked:"[@checked]",disabled:"[@disabled]",enabled:"[not(@disabled)]",not:function(b){var a=b[6],h=Selector.patterns,e=Selector.xpath,g,b,d,f=[];while(a&&g!=a&&/\S/.test(a)){g=a;for(var c in h)if(b=a.match(h[c])){d=typeof e[c]=="function"?e[c](b):(new Template(e[c])).evaluate(b);f.push("("+d.substring(1,d.length-1)+")");a=a.replace(b[0],"");break}}return "[not("+f.join(" and ")+")]"},"nth-child":function(a){return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ",a)},"nth-last-child":function(a){return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ",a)},"nth-of-type":function(a){return Selector.xpath.pseudos.nth("position() ",a)},"nth-last-of-type":function(a){return Selector.xpath.pseudos.nth("(last() + 1 - position()) ",a)},"first-of-type":function(a){a[6]="1";return Selector.xpath.pseudos["nth-of-type"](a)},"last-of-type":function(a){a[6]="1";return Selector.xpath.pseudos["nth-last-of-type"](a)},"only-of-type":function(a){var b=Selector.xpath.pseudos;return b["first-of-type"](a)+b["last-of-type"](a)},nth:function(d,g){var a,b=g[6],c;if(b=="even")b="2n+0";if(b=="odd")b="2n+1";if(a=b.match(/^(\d+)$/))return "["+d+"= "+a[1]+"]";if(a=b.match(/^(-?\d*)?n(([+-])(\d+))?/)){if(a[1]=="-")a[1]=-1;var e=a[1]?Number(a[1]):1,f=a[2]?Number(a[2]):0;c="[((#{fragment} - #{b}) mod #{a} = 0) and ((#{fragment} - #{b}) div #{a} >= 0)]";return (new Template(c)).evaluate({fragment:d,a:e,b:f})}}}},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 = false;',attr:function(a){a[3]=a[5]||a[6];return (new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;')).evaluate(a)},pseudo:function(a){if(a[6])a[6]=a[6].replace(/"/g,'\\"');return (new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;')).evaluate(a)},descendant:'c = "descendant";',child:'c = 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