/*
Copyright (c) 2007, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.3.0

NOTE: This file contains a preview release of the YUI library made
available for testing purposes.  It is not recommended that this code
be used in production environments.  You should replace this version
with the 2.3.0 release as soon as it is available.

*/

(function(){var Y=YAHOO.util,getStyle,setStyle,id_counter=0,propertyCache={},reClassNameCache={};var isOpera=YAHOO.env.ua.opera,isSafari=YAHOO.env.ua.webkit,isGecko=YAHOO.env.ua.gecko,isIE=YAHOO.env.ua.ie;var patterns={HYPHEN:/(-[a-z])/i,ROOT_TAG:/^body|html$/i};var toCamel=function(property){if(!patterns.HYPHEN.test(property)){return property;}
if(propertyCache[property]){return propertyCache[property];}
var converted=property;while(patterns.HYPHEN.exec(converted)){converted=converted.replace(RegExp.$1,RegExp.$1.substr(1).toUpperCase());}
propertyCache[property]=converted;return converted;};var getClassRegEx=function(className){var re=reClassNameCache[className];if(!re){re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)');reClassNameCache[className]=re;}
return re;};if(document.defaultView&&document.defaultView.getComputedStyle){getStyle=function(el,property){var value=null;if(property=='float'){property='cssFloat';}
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;case'float':property='styleFloat';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(YAHOO.lang.isString(el.style.filter)){el.style.filter='alpha(opacity='+val*100+')';if(!el.currentStyle||!el.currentStyle.hasLayout){el.style.zoom=1;}}
break;case'float':property='styleFloat';default:el.style[property]=val;}};}else{setStyle=function(el,property,val){if(property=='float'){property='cssFloat';}
el.style[property]=val;};}
var testElement=function(node,method){return node.nodeType==1&&(!method||method(node));};YAHOO.util.Dom={get:function(el){if(!el||el.tagName||el.item){return el;}
if(YAHOO.lang.isString(el)){return document.getElementById(el);}
if(el.splice){var c=[];for(var i=0,len=el.length;i<len;++i){c[c.length]=Y.Dom.get(el[i]);}
return c;}
return el;},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')&&el!=document.body){return false;}
var parentNode=null;var pos=[];var box;var doc=el.ownerDocument;if(el.getBoundingClientRect){box=el.getBoundingClientRect();return[box.left+Y.Dom.getDocumentScrollLeft(el.ownerDocument),box.top+Y.Dom.getDocumentScrollTop(el.ownerDocument)];}
else{pos=[el.offsetLeft,el.offsetTop];parentNode=el.offsetParent;var hasAbs=this.getStyle(el,'position')=='absolute';if(parentNode!=el){while(parentNode){pos[0]+=parentNode.offsetLeft;pos[1]+=parentNode.offsetTop;if(isSafari&&!hasAbs&&this.getStyle(parentNode,'position')=='absolute'){hasAbs=true;}
parentNode=parentNode.offsetParent;}}
if(isSafari&&hasAbs){pos[0]-=el.ownerDocument.body.offsetLeft;pos[1]-=el.ownerDocument.body.offsetTop;}}
parentNode=el.parentNode;while(parentNode.tagName&&!patterns.ROOT_TAG.test(parentNode.tagName))
{if(Y.Dom.getStyle(parentNode,'display').search(/^inline|table-row.*$/i)){pos[0]-=parentNode.scrollLeft;pos[1]-=parentNode.scrollTop;}
parentNode=parentNode.parentNode;}
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){if((el.parentNode===null||el.offsetParent===null||this.getStyle(el,'display')=='none')&&el!=document.body){return false;}
var region=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,apply){tag=tag||'*';root=(root)?Y.Dom.get(root):null||document;if(!root){return[];}
var nodes=[],elements=root.getElementsByTagName(tag),re=getClassRegEx(className);for(var i=0,len=elements.length;i<len;++i){if(re.test(elements[i].className)){nodes[nodes.length]=elements[i];if(apply){apply.call(elements[i],elements[i]);}}}
return nodes;},hasClass:function(el,className){var re=getClassRegEx(className);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 false;}
el.className=YAHOO.lang.trim([el.className,className].join(' '));return true;};return Y.Dom.batch(el,f,Y.Dom,true);},removeClass:function(el,className){var re=getClassRegEx(className);var f=function(el){if(!this.hasClass(el,className)){return false;}
var c=el.className;el.className=c.replace(re,' ');if(this.hasClass(el,className)){this.removeClass(el,className);}
el.className=YAHOO.lang.trim(el.className);return true;};return Y.Dom.batch(el,f,Y.Dom,true);},replaceClass:function(el,oldClassName,newClassName){if(!newClassName||oldClassName===newClassName){return false;}
var re=getClassRegEx(oldClassName);var f=function(el){if(!this.hasClass(el,oldClassName)){this.addClass(el,newClassName);return true;}
el.className=el.className.replace(re,' '+newClassName+' ');if(this.hasClass(el,oldClassName)){this.replaceClass(el,oldClassName,newClassName);}
el.className=YAHOO.lang.trim(el.className);return true;};return Y.Dom.batch(el,f,Y.Dom,true);},generateId:function(el,prefix){prefix=prefix||'yui-gen';var f=function(el){if(el&&el.id){return el.id;}
var id=prefix+id_counter++;if(el){el.id=id;}
return id;};return Y.Dom.batch(el,f,Y.Dom,true)||f.apply(Y.Dom,arguments);},isAncestor:function(haystack,needle){haystack=Y.Dom.get(haystack);if(!haystack||!needle){return false;}
var f=function(node){if(haystack.contains&&node.tagName&&!isSafari){return haystack.contains(node);}
else if(haystack.compareDocumentPosition&&node.tagName){return!!(haystack.compareDocumentPosition(node)&16);}else if(node.tagName){return!!this.getAncestorBy(node,function(el){return el==haystack;});}
return false;};return Y.Dom.batch(needle,f,Y.Dom,true);},inDocument:function(el){var f=function(el){if(isSafari){while(el=el.parentNode){if(el==document.documentElement){return true;}}
return false;}
return this.isAncestor(document.documentElement,el);};return Y.Dom.batch(el,f,Y.Dom,true);},getElementsBy:function(method,tag,root,apply){tag=tag||'*';root=(root)?Y.Dom.get(root):null||document;if(!root){return[];}
var nodes=[],elements=root.getElementsByTagName(tag);for(var i=0,len=elements.length;i<len;++i){if(method(elements[i])){nodes[nodes.length]=elements[i];if(apply){apply(elements[i]);}}}
return nodes;},batch:function(el,method,o,override){el=(el&&el.tagName)?el:Y.Dom.get(el);if(!el||!method){return false;}
var scope=(override)?o:window;if(el.tagName||(!el.item&&!el.slice)){return method.call(scope,el,o);}
var collection=[];for(var i=0,len=el.length;i<len;++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;},getAncestorBy:function(node,method){while(node=node.parentNode){if(testElement(node,method)){return node;}}
return null;},getAncestorByClassName:function(node,className){node=Y.Dom.get(node);if(!node){return null;}
var method=function(el){return Y.Dom.hasClass(el,className);};return Y.Dom.getAncestorBy(node,method);},getAncestorByTagName:function(node,tagName){node=Y.Dom.get(node);if(!node){return null;}
var method=function(el){return el.tagName&&el.tagName.toUpperCase()==tagName.toUpperCase();};return Y.Dom.getAncestorBy(node,method);},getPreviousSiblingBy:function(node,method){while(node=node.previousSibling){if(testElement(node,method)){return node;}}
return null;},getPreviousSibling:function(node){node=Y.Dom.get(node);if(!node){return null;}
return Y.Dom.getPreviousSiblingBy(node);},getNextSiblingBy:function(node,method){while(node=node.nextSibling){if(testElement(node,method)){return node;}}
return null;},getNextSibling:function(node){node=Y.Dom.get(node);if(!node){return null;}
return Y.Dom.getNextSiblingBy(node);},getFirstChildBy:function(node,method){var child=(testElement(node.firstChild,method))?node.firstChild:null;return child||Y.Dom.getNextSiblingBy(node.firstChild,method);},getFirstChild:function(node,method){node=Y.Dom.get(node);if(!node){return null;}
return Y.Dom.getFirstChildBy(node);},getLastChildBy:function(node,method){if(!node){return null;}
var child=(testElement(node.lastChild,method))?node.lastChild:null;return child||Y.Dom.getPreviousSiblingBy(node.lastChild,method);},getLastChild:function(node){node=Y.Dom.get(node);return Y.Dom.getLastChildBy(node);},getChildrenBy:function(node,method){var child=Y.Dom.getFirstChildBy(node,method);var children=child?[child]:[];Y.Dom.getNextSiblingBy(child,function(node){if(!method||method(node)){children[children.length]=node;}
return false;});return children;},getChildren:function(node){node=Y.Dom.get(node);if(!node){}
return Y.Dom.getChildrenBy(node);},getDocumentScrollLeft:function(doc){doc=doc||document;return Math.max(doc.documentElement.scrollLeft,doc.body.scrollLeft);},getDocumentScrollTop:function(doc){doc=doc||document;return Math.max(doc.documentElement.scrollTop,doc.body.scrollTop);},insertBefore:function(newNode,referenceNode){newNode=Y.Dom.get(newNode);referenceNode=Y.Dom.get(referenceNode);if(!newNode||!referenceNode||!referenceNode.parentNode){return null;}
return referenceNode.parentNode.insertBefore(newNode,referenceNode);},insertAfter:function(newNode,referenceNode){newNode=Y.Dom.get(newNode);referenceNode=Y.Dom.get(referenceNode);if(!newNode||!referenceNode||!referenceNode.parentNode){return null;}
if(referenceNode.nextSibling){return referenceNode.parentNode.insertBefore(newNode,referenceNode.nextSibling);}else{return referenceNode.parentNode.appendChild(newNode);}}};})();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(YAHOO.lang.isArray(x)){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();YAHOO.register("dom",YAHOO.util.Dom,{version:"2.3.0",build:"357"});