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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(E,F,D){if(this.includeScrollOffsets){return this.withinIncludingScrolloffsets(E,F,D)}this.xcomp=F;this.ycomp=D;this.offset=Element.cumulativeOffset(E);return(D>=this.offset[1]&&D<this.offset[1]+E.offsetHeight&&F>=this.offset[0]&&F<this.offset[0]+E.offsetWidth)},withinIncludingScrolloffsets:function(F,G,H){var E=Element.cumulativeScrollOffset(F);this.xcomp=G+E[0]-this.deltaX;this.ycomp=H+E[1]-this.deltaY;this.offset=Element.cumulativeOffset(F);return(this.ycomp>=this.offset[1]&&this.ycomp<this.offset[1]+F.offsetHeight&&this.xcomp>=this.offset[0]&&this.xcomp<this.offset[0]+F.offsetWidth)},overlap:function(D,C){if(!D){return 0}if(D=="vertical"){return((this.offset[1]+C.offsetHeight)-this.ycomp)/C.offsetHeight}if(D=="horizontal"){return((this.offset[0]+C.offsetWidth)-this.xcomp)/C.offsetWidth}},cumulativeOffset:Element.Methods.cumulativeOffset,positionedOffset:Element.Methods.positionedOffset,absolutize:function(B){Position.prepare();return Element.absolutize(B)},relativize:function(B){Position.prepare();return Element.relativize(B)},realOffset:Element.Methods.cumulativeScrollOffset,offsetParent:Element.Methods.getOffsetParent,page:Element.Methods.viewportOffset,clone:function(E,D,F){F=F||{};return Element.clonePosition(D,E,F)}};if(!document.getElementsByClassName){document.getElementsByClassName=function(D){function C(A){return A.blank()?null:"[contains(concat(' ', @class, ' '), ' "+A+" ')]"}D.getElementsByClassName=Prototype.BrowserFeatures.XPath?function(A,B){B=B.toString().strip();var F=/\s/.test(B)?$w(B).map(C).join(""):C(B);return F?document._getElementsByXPath(".//*"+F,A):[]}:function(N,O){O=O.toString().strip();var L=[],K=(/\s/.test(O)?$w(O):null);if(!K&&!O){return L}var A=$(N).getElementsByTagName("*");O=" "+O+" ";for(var P=0,M,B;M=A[P];P++){if(M.className&&(B=" "+M.className+" ")&&(B.include(O)||(K&&K.all(function(E){return !E.toString().blank()&&B.include(" "+E+" ")})))){L.push(Element.extend(M))}}return L};return function(A,B){return $(B||document.body).getElementsByClassName(A)}}(Element.Methods)}Element.ClassNames=Class.create();Element.ClassNames.prototype={initialize:function(B){this.element=$(B)},_each:function(B){this.element.className.split(/\s+/).select(function(A){return A.length>0})._each(B)},set:function(B){this.element.className=B},add:function(B){if(this.include(B)){return }this.set($A(this).concat(B).join(" "))},remove:function(B){if(!this.include(B)){return }this.set($A(this).without(B).join(" "))},toString:function(){return $A(this).join(" 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