(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&&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.nodeType&&!isSafari){
                    return haystack.contains(node);
                }
                else if(haystack.compareDocumentPosition&&node.nodeType){
                    return!!(haystack.compareDocumentPosition(node)&16);
                }
                else if(node.nodeType){
                    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=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=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:"442"
}
);