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instead');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},within:function(c,b,a){if(this.includeScrollOffsets){return this.withinIncludingScrolloffsets(c,b,a)}this.xcomp=b;this.ycomp=a;this.offset=Element.cumulativeOffset(c);return(a>=this.offset[1]&&a<this.offset[1]+c.offsetHeight&&b>=this.offset[0]&&b<this.offset[0]+c.offsetWidth)},withinIncludingScrolloffsets:function(d,c,b){var a=Element.cumulativeScrollOffset(d);this.xcomp=c+a[0]-this.deltaX;this.ycomp=b+a[1]-this.deltaY;this.offset=Element.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}},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(c,a,b){b=b||{};return Element.clonePosition(a,c,b)}};if(!document.getElementsByClassName){document.getElementsByClassName=function(b){function a(c){return c.blank()?null:"[contains(concat(' ', @class, ' '), ' "+c+" ')]"}b.getElementsByClassName=Prototype.BrowserFeatures.XPath?function(e,d){d=d.toString().strip();var c=/\s/.test(d)?$w(d).map(a).join(""):a(d);return c?document._getElementsByXPath(".//*"+c,e):[]}:function(k,d){d=d.toString().strip();var f=[],g=(/\s/.test(d)?$w(d):null);if(!g&&!d){return f}var h=$(k).getElementsByTagName("*");d=" "+d+" ";for(var j=0,e,c;e=h[j];j++){if(e.className&&(c=" "+e.className+" ")&&(c.include(d)||(g&&g.all(function(i){return !i.toString().blank()&&c.include(" "+i+" ")})))){f.push(Element.extend(e))}}return f};return function(d,c){return $(c||document.body).getElementsByClassName(d)}}(Element.Methods)}Element.ClassNames=Class.create();Element.ClassNames.prototype={initialize:function(a){this.element=$(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(" 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