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a=Position.cumulativeOffset(b);window.scrollTo(a[0],a[1]);return b},getStyle:function(a,b){a=$(a);b=b=="float"?"cssFloat":b.camelize();var d=a.style[b];if(!d){var c=document.defaultView.getComputedStyle(a,null);d=c?c[b]:null}if(b=="opacity"){return d?parseFloat(d):1}return d=="auto"?null:d},getOpacity:function(a){return $(a).getStyle("opacity")},setStyle:function(a,b,c){a=$(a);var e=a.style;for(var d in b){if(d=="opacity"){a.setOpacity(b[d])}else{e[(d=="float"||d=="cssFloat")?(e.styleFloat===undefined?"cssFloat":"styleFloat"):(c?d:d.camelize())]=b[d]}}return a},setOpacity:function(b,a){b=$(b);b.style.opacity=(a==1||a==="")?"":(a<1e-05)?0:a;return b},getDimensions:function(d){d=$(d);var f=$(d).getStyle("display");if(f!="none"&&f!=null){return{width:d.offsetWidth,height:d.offsetHeight}}var c=d.style;var a=c.visibility;var b=c.position;var h=c.display;c.visibility="hidden";c.position="absolute";c.display="block";var e=d.clientWidth;var g=d.clientHeight;c.display=h;c.position=b;c.visibility=a;return{width:e,height:g}},makePositioned:function(b){b=$(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=$(a);if(!a._overflow){return a}a.style.overflow=a._overflow=="auto"?"":a._overflow;a._overflow=null;return a}};Object.extend(Element.Methods,{childOf:Element.Methods.descendantOf,childElements:Element.Methods.immediateDescendants});if(Prototype.Browser.Opera){Element.Methods._getStyle=Element.Methods.getStyle;Element.Methods.getStyle=function(b,a){switch(a){case"left":case"top":case"right":case"bottom":if(Element._getStyle(b,"position")=="static"){return null}default:return Element._getStyle(b,a)}}}else{if(Prototype.Browser.IE){Element.Methods.getStyle=function(a,b){a=$(a);b=(b=="float"||b=="cssFloat")?"styleFloat":b.camelize();var c=a.style[b];if(!c&&a.currentStyle){c=a.currentStyle[b]}if(b=="opacity"){if(c=(a.getStyle("filter")||"").match(/alpha\(opacity=(.*)\)/)){if(c[1]){return parseFloat(c[1])/100}}return 1}if(c=="auto"){if((b=="width"||b=="height")&&(a.getStyle("display")!="none")){return a["offset"+b.capitalize()]+"px"}return null}return c};Element.Methods.setOpacity=function(a,d){a=$(a);var 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a}}else{if(Prototype.Browser.Gecko){Element.Methods.setOpacity=function(b,a){b=$(b);b.style.opacity=(a==1)?0.999999:(a==="")?"":(a<1e-05)?0:a;return b}}}}Element._attributeTranslations={names:{colspan:"colSpan",rowspan:"rowSpan",valign:"vAlign",datetime:"dateTime",accesskey:"accessKey",tabindex:"tabIndex",enctype:"encType",maxlength:"maxLength",readonly:"readOnly",longdesc:"longDesc"},values:{_getAttr:function(b,a){return b.getAttribute(a,2)},_flag:function(b,a){return $(b).hasAttribute(a)?a:null},style:function(a){return a.style.cssText.toLowerCase()},title:function(b){var a=b.getAttributeNode("title");return a.specified?a.nodeValue:null}}};(function(){Object.extend(this,{href:this._getAttr,src:this._getAttr,type:this._getAttr,disabled:this._flag,checked:this._flag,readonly:this._flag,multiple:this._flag})}).call(Element._attributeTranslations.values);Element.Methods.Simulated={hasAttribute:function(a,d){var c=Element._attributeTranslations,b;d=c.names[d]||d;b=$(a).getAttributeNode(d);return b&&b.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.hasAttribute=function(b,a){if(b.hasAttribute){return b.hasAttribute(a)}return Element.Methods.Simulated.hasAttribute(b,a)};Element.addMethods=function(c){var e=Prototype.BrowserFeatures,f=Element.Methods.ByTag;if(!c){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 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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.expression=a.strip();this.compileMatcher()},compileMatcher:function(){if(Prototype.BrowserFeatures.XPath&&!(/\[[\w-]*?:/).test(this.expression)){return 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