/*
Copyright (c) 2006, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 0.12.2
*/

(function(){var Y=YAHOO.util,getStyle,setStyle,id_counter=0,propertyCache={};var ua=navigator.userAgent.toLowerCase(),isOpera=(ua.indexOf('opera')>-1),isSafari=(ua.indexOf('safari')>-1),isGecko=(!isOpera&&!isSafari&&ua.indexOf('gecko')>-1),isIE=(!isOpera&&ua.indexOf('msie')>-1);var patterns={HYPHEN:/(-[a-z])/i};var toCamel=function(property){if(!patterns.HYPHEN.test(property)){return property;}
if(propertyCache[property]){return propertyCache[property];}
while(patterns.HYPHEN.exec(property)){property=property.replace(RegExp.$1,RegExp.$1.substr(1).toUpperCase());}
propertyCache[property]=property;return property;};if(document.defaultView&&document.defaultView.getComputedStyle){getStyle=function(el,property){var value=null;var computed=document.defaultView.getComputedStyle(el,'');if(computed){value=computed[toCamel(property)];}
return el.style[property]||value;};}else if(document.documentElement.currentStyle&&isIE){getStyle=function(el,property){switch(toCamel(property)){case'opacity':var val=100;try{val=el.filters['DXImageTransform.Microsoft.Alpha'].opacity;}catch(e){try{val=el.filters('alpha').opacity;}catch(e){}}
return val/100;break;default:var value=el.currentStyle?el.currentStyle[property]:null;return(el.style[property]||value);}};}else{getStyle=function(el,property){return el.style[property];};}
if(isIE){setStyle=function(el,property,val){switch(property){case'opacity':if(typeof el.style.filter=='string'){el.style.filter='alpha(opacity='+val*100+')';if(!el.currentStyle||!el.currentStyle.hasLayout){el.style.zoom=1;}}
break;default:el.style[property]=val;}};}else{setStyle=function(el,property,val){el.style[property]=val;};}
YAHOO.util.Dom={get:function(el){if(!el){return null;}
if(typeof el!='string'&&!(el instanceof Array)){return el;}
if(typeof el=='string'){return document.getElementById(el);}
else{var collection=[];for(var i=0,len=el.length;i<len;++i){collection[collection.length]=Y.Dom.get(el[i]);}
return collection;}
return null;},getStyle:function(el,property){property=toCamel(property);var f=function(element){return getStyle(element,property);};return Y.Dom.batch(el,f,Y.Dom,true);},setStyle:function(el,property,val){property=toCamel(property);var f=function(element){setStyle(element,property,val);};Y.Dom.batch(el,f,Y.Dom,true);},getXY:function(el){var f=function(el){if(el.parentNode===null||el.offsetParent===null||this.getStyle(el,'display')=='none'){return false;}
var parentNode=null;var pos=[];var box;if(el.getBoundingClientRect){box=el.getBoundingClientRect();var doc=document;if(!this.inDocument(el)&&parent.document!=document){doc=parent.document;if(!this.isAncestor(doc.documentElement,el)){return false;}}
var scrollTop=Math.max(doc.documentElement.scrollTop,doc.body.scrollTop);var scrollLeft=Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft);return[box.left+scrollLeft,box.top+scrollTop];}
else{pos=[el.offsetLeft,el.offsetTop];parentNode=el.offsetParent;if(parentNode!=el){while(parentNode){pos[0]+=parentNode.offsetLeft;pos[1]+=parentNode.offsetTop;parentNode=parentNode.offsetParent;}}
if(isSafari&&this.getStyle(el,'position')=='absolute'){pos[0]-=document.body.offsetLeft;pos[1]-=document.body.offsetTop;}}
if(el.parentNode){parentNode=el.parentNode;}
else{parentNode=null;}
while(parentNode&&parentNode.tagName.toUpperCase()!='BODY'&&parentNode.tagName.toUpperCase()!='HTML')
{if(Y.Dom.getStyle(parentNode,'display')!='inline'){pos[0]-=parentNode.scrollLeft;pos[1]-=parentNode.scrollTop;}
if(parentNode.parentNode){parentNode=parentNode.parentNode;}else{parentNode=null;}}
return pos;};return Y.Dom.batch(el,f,Y.Dom,true);},getX:function(el){var f=function(el){return Y.Dom.getXY(el)[0];};return Y.Dom.batch(el,f,Y.Dom,true);},getY:function(el){var f=function(el){return Y.Dom.getXY(el)[1];};return Y.Dom.batch(el,f,Y.Dom,true);},setXY:function(el,pos,noRetry){var f=function(el){var style_pos=this.getStyle(el,'position');if(style_pos=='static'){this.setStyle(el,'position','relative');style_pos='relative';}
var pageXY=this.getXY(el);if(pageXY===false){return false;}
var delta=[parseInt(this.getStyle(el,'left'),10),parseInt(this.getStyle(el,'top'),10)];if(isNaN(delta[0])){delta[0]=(style_pos=='relative')?0:el.offsetLeft;}
if(isNaN(delta[1])){delta[1]=(style_pos=='relative')?0:el.offsetTop;}
if(pos[0]!==null){el.style.left=pos[0]-pageXY[0]+delta[0]+'px';}
if(pos[1]!==null){el.style.top=pos[1]-pageXY[1]+delta[1]+'px';}
if(!noRetry){var newXY=this.getXY(el);if((pos[0]!==null&&newXY[0]!=pos[0])||(pos[1]!==null&&newXY[1]!=pos[1])){this.setXY(el,pos,true);}}};Y.Dom.batch(el,f,Y.Dom,true);},setX:function(el,x){Y.Dom.setXY(el,[x,null]);},setY:function(el,y){Y.Dom.setXY(el,[null,y]);},getRegion:function(el){var f=function(el){var region=new Y.Region.getRegion(el);return region;};return Y.Dom.batch(el,f,Y.Dom,true);},getClientWidth:function(){return Y.Dom.getViewportWidth();},getClientHeight:function(){return Y.Dom.getViewportHeight();},getElementsByClassName:function(className,tag,root){var method=function(el){return Y.Dom.hasClass(el,className);};return Y.Dom.getElementsBy(method,tag,root);},hasClass:function(el,className){var re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)');var f=function(el){return re.test(el['className']);};return Y.Dom.batch(el,f,Y.Dom,true);},addClass:function(el,className){var f=function(el){if(this.hasClass(el,className)){return;}
el['className']=[el['className'],className].join(' ');};Y.Dom.batch(el,f,Y.Dom,true);},removeClass:function(el,className){var re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)','g');var f=function(el){if(!this.hasClass(el,className)){return;}
var c=el['className'];el['className']=c.replace(re,' ');if(this.hasClass(el,className)){this.removeClass(el,className);}};Y.Dom.batch(el,f,Y.Dom,true);},replaceClass:function(el,oldClassName,newClassName){if(oldClassName===newClassName){return false;}
var re=new RegExp('(?:^|\\s+)'+oldClassName+'(?:\\s+|$)','g');var f=function(el){if(!this.hasClass(el,oldClassName)){this.addClass(el,newClassName);return;}
el['className']=el['className'].replace(re,' '+newClassName+' ');if(this.hasClass(el,oldClassName)){this.replaceClass(el,oldClassName,newClassName);}};Y.Dom.batch(el,f,Y.Dom,true);},generateId:function(el,prefix){prefix=prefix||'yui-gen';el=el||{};var f=function(el){if(el){el=Y.Dom.get(el);}else{el={};}
if(!el.id){el.id=prefix+id_counter++;}
return el.id;};return Y.Dom.batch(el,f,Y.Dom,true);},isAncestor:function(haystack,needle){haystack=Y.Dom.get(haystack);if(!haystack||!needle){return false;}
var f=function(needle){if(haystack.contains&&!isSafari){return haystack.contains(needle);}
else if(haystack.compareDocumentPosition){return!!(haystack.compareDocumentPosition(needle)&16);}
else{var parent=needle.parentNode;while(parent){if(parent==haystack){return true;}
else if(!parent.tagName||parent.tagName.toUpperCase()=='HTML'){return false;}
parent=parent.parentNode;}
return false;}};return Y.Dom.batch(needle,f,Y.Dom,true);},inDocument:function(el){var f=function(el){return this.isAncestor(document.documentElement,el);};return Y.Dom.batch(el,f,Y.Dom,true);},getElementsBy:function(method,tag,root){tag=tag||'*';var nodes=[];if(root){root=Y.Dom.get(root);if(!root){return nodes;}}else{root=document;}
var elements=root.getElementsByTagName(tag);if(!elements.length&&(tag=='*'&&root.all)){elements=root.all;}
for(var i=0,len=elements.length;i<len;++i){if(method(elements[i])){nodes[nodes.length]=elements[i];}}
return nodes;},batch:function(el,method,o,override){var id=el;el=Y.Dom.get(el);var scope=(override)?o:window;if(!el||el.tagName||!el.length){if(!el){return false;}
return method.call(scope,el,o);}
var collection=[];for(var i=0,len=el.length;i<len;++i){if(!el[i]){id=el[i];}
collection[collection.length]=method.call(scope,el[i],o);}
return collection;},getDocumentHeight:function(){var scrollHeight=(document.compatMode!='CSS1Compat')?document.body.scrollHeight:document.documentElement.scrollHeight;var h=Math.max(scrollHeight,Y.Dom.getViewportHeight());return h;},getDocumentWidth:function(){var scrollWidth=(document.compatMode!='CSS1Compat')?document.body.scrollWidth:document.documentElement.scrollWidth;var w=Math.max(scrollWidth,Y.Dom.getViewportWidth());return w;},getViewportHeight:function(){var height=self.innerHeight;var mode=document.compatMode;if((mode||isIE)&&!isOpera){height=(mode=='CSS1Compat')?document.documentElement.clientHeight:document.body.clientHeight;}
return height;},getViewportWidth:function(){var width=self.innerWidth;var mode=document.compatMode;if(mode||isIE){width=(mode=='CSS1Compat')?document.documentElement.clientWidth:document.body.clientWidth;}
return width;}};})();YAHOO.util.Region=function(t,r,b,l){this.top=t;this[1]=t;this.right=r;this.bottom=b;this.left=l;this[0]=l;};YAHOO.util.Region.prototype.contains=function(region){return(region.left>=this.left&&region.right<=this.right&&region.top>=this.top&&region.bottom<=this.bottom);};YAHOO.util.Region.prototype.getArea=function(){return((this.bottom-this.top)*(this.right-this.left));};YAHOO.util.Region.prototype.intersect=function(region){var t=Math.max(this.top,region.top);var r=Math.min(this.right,region.right);var b=Math.min(this.bottom,region.bottom);var l=Math.max(this.left,region.left);if(b>=t&&r>=l){return new YAHOO.util.Region(t,r,b,l);}else{return null;}};YAHOO.util.Region.prototype.union=function(region){var t=Math.min(this.top,region.top);var r=Math.max(this.right,region.right);var b=Math.max(this.bottom,region.bottom);var l=Math.min(this.left,region.left);return new YAHOO.util.Region(t,r,b,l);};YAHOO.util.Region.prototype.toString=function(){return("Region {"+"top: "+this.top+", right: "+this.right+", bottom: "+this.bottom+", left: "+this.left+"}");};YAHOO.util.Region.getRegion=function(el){var p=YAHOO.util.Dom.getXY(el);var t=p[1];var r=p[0]+el.offsetWidth;var b=p[1]+el.offsetHeight;var l=p[0];return new YAHOO.util.Region(t,r,b,l);};YAHOO.util.Point=function(x,y){if(x instanceof Array){y=x[1];x=x[0];}
this.x=this.right=this.left=this[0]=x;this.y=this.top=this.bottom=this[1]=y;};YAHOO.util.Point.prototype=new YAHOO.util.Region();