YAHOO.util.Dom=function(){var ua=navigator.userAgent.toLowerCase();

var isOpera=(ua.indexOf('opera')!=-1);

var isIE=(ua.indexOf('msie')!=-1&&!isOpera);

var id_counter=0;

return{get:function(el){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]=this.get(el[i]);

}return collection;

}return null;

},getStyle:function(el,property){var f=function(el){var value=null;

var dv=document.defaultView;

if(property=='opacity'&&el.filters){value=1;

try{value=el.filters.item('DXImageTransform.Microsoft.Alpha').opacity/100;

}catch(e){try{value=el.filters.item('alpha').opacity/100;

}catch(e){}}}else if(el.style[property]){value=el.style[property];

}else if(el.currentStyle&&el.currentStyle[property]){value=el.currentStyle[property];

}else if(dv&&dv.getComputedStyle){var converted='';

for(var i=0,len=property.length;

i<len;

++i){if(property.charAt(i)==property.charAt(i).toUpperCase()){converted=converted+'-'+property.charAt(i).toLowerCase();

}else{converted=converted+property.charAt(i);

}}if(dv.getComputedStyle(el,'')&&dv.getComputedStyle(el,'').getPropertyValue(converted)){value=dv.getComputedStyle(el,'').getPropertyValue(converted);

}}return value;

};

return this.batch(el,f,this,true);

},setStyle:function(el,property,val){var f=function(el){switch(property){case'opacity':if(isIE&&typeof el.style.filter=='string'){el.style.filter='alpha(opacity='+val*100+')';

if(!el.currentStyle||!el.currentStyle.hasLayout){el.style.zoom=1;

}}else{el.style.opacity=val;

el.style['-moz-opacity']=val;

el.style['-khtml-opacity']=val;

}break;

default:el.style[property]=val;

}};

this.batch(el,f,this,true);

},getXY:function(el){var f=function(el){if(el.parentNode===null||this.getStyle(el,'display')=='none'){return false;

}var parent=null;

var pos=[];

var box;

if(el.getBoundingClientRect){box=el.getBoundingClientRect();

var scrollTop=Math.max(document.documentElement.scrollTop,document.body.scrollTop);

var scrollLeft=Math.max(document.documentElement.scrollLeft,document.body.scrollLeft);

return[box.left+scrollLeft,box.top+scrollTop];

}else if(document.getBoxObjectFor){box=document.getBoxObjectFor(el);

var borderLeft=parseInt(this.getStyle(el,'borderLeftWidth'));

var borderTop=parseInt(this.getStyle(el,'borderTopWidth'));

pos=[box.x-borderLeft,box.y-borderTop];

}else{pos=[el.offsetLeft,el.offsetTop];

parent=el.offsetParent;

if(parent!=el){while(parent){pos[0]+=parent.offsetLeft;

pos[1]+=parent.offsetTop;

parent=parent.offsetParent;

}}if(ua.indexOf('opera')!=-1||(ua.indexOf('safari')!=-1&&this.getStyle(el,'position')=='absolute')){pos[0]-=document.body.offsetLeft;

pos[1]-=document.body.offsetTop;

}}if(el.parentNode){parent=el.parentNode;

}else{parent=null;

}while(parent&&parent.tagName!='BODY'&&parent.tagName!='HTML'){pos[0]-=parent.scrollLeft;

pos[1]-=parent.scrollTop;

if(parent.parentNode){parent=parent.parentNode;

}else{parent=null;

}}return pos;

};

return this.batch(el,f,this,true);

},getX:function(el){return this.getXY(el)[0];

},getY:function(el){return this.getXY(el)[1];

},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=YAHOO.util.Dom.getXY(el);

if(pageXY===false){return false;

}var delta=[parseInt(YAHOO.util.Dom.getStyle(el,'left'),10),parseInt(YAHOO.util.Dom.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';

}var newXY=this.getXY(el);

if(!noRetry&&(newXY[0]!=pos[0]||newXY[1]!=pos[1])){var retry=function(){YAHOO.util.Dom.setXY(el,pos,true);

};

setTimeout(retry,0);

}};

this.batch(el,f,this,true);

},setX:function(el,x){this.setXY(el,[x,null]);

},setY:function(el,y){this.setXY(el,[null,y]);

},getRegion:function(el){var f=function(el){return new YAHOO.util.Region.getRegion(el);

};

return this.batch(el,f,this,true);

},getClientWidth:function(){return this.getViewportWidth();

},getClientHeight:function(){return this.getViewportHeight();

},getElementsByClassName:function(className,tag,root){var re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)');

var method=function(el){return re.test(el['className']);

};

return this.getElementsBy(method,tag,root);

},hasClass:function(el,className){var f=function(el){var re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)');

return re.test(el['className']);

};

return this.batch(el,f,this,true);

},addClass:function(el,className){var f=function(el){if(this.hasClass(el,className)){return;

}el['className']=[el['className'],className].join(' ');

};

this.batch(el,f,this,true);

},removeClass:function(el,className){var f=function(el){if(!this.hasClass(el,className)){return;

}var re=new RegExp('(?:^|\\s+)'+className+'(?:\\s+|$)','g');

var c=el['className'];

el['className']=c.replace(re,' ');

};

this.batch(el,f,this,true);

},replaceClass:function(el,oldClassName,newClassName){var f=function(el){this.removeClass(el,oldClassName);

this.addClass(el,newClassName);

};

this.batch(el,f,this,true);

},generateId:function(el,prefix){prefix=prefix||'yui-gen';

var f=function(el){el=el||{};

if(!el.id){el.id=prefix+id_counter++;

}return el.id;

};

return this.batch(el,f,this,true);

},isAncestor:function(haystack,needle){haystack=this.get(haystack);

if(!haystack||!needle){return false;

}var f=function(needle){if(haystack.contains&&ua.indexOf('safari')<0){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=='HTML'){return false;

}parent=parent.parentNode;

}return false;

}};

return this.batch(needle,f,this,true);

},inDocument:function(el){var f=function(el){return this.isAncestor(document.documentElement,el);

};

return this.batch(el,f,this,true);

},getElementsBy:function(method,tag,root){tag=tag||'*';

root=this.get(root)||document;

var nodes=[];

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){el=this.get(el);

var scope=(override)?o:window;

if(!el||el.tagName||!el.length){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=-1,windowHeight=-1,bodyHeight=-1;

var marginTop=parseInt(this.getStyle(document.body,'marginTop'),10);

var marginBottom=parseInt(this.getStyle(document.body,'marginBottom'),10);

var mode=document.compatMode;

if((mode||isIE)&&!isOpera){switch(mode){case'CSS1Compat':scrollHeight=((window.innerHeight&&window.scrollMaxY)?window.innerHeight+window.scrollMaxY:-1);

windowHeight=[document.documentElement.clientHeight,self.innerHeight||-1].sort(function(a,b){return(a-b);

})[1];

bodyHeight=document.body.offsetHeight+marginTop+marginBottom;

break;

default:scrollHeight=document.body.scrollHeight;

bodyHeight=document.body.clientHeight;

}}else{scrollHeight=document.documentElement.scrollHeight;

windowHeight=self.innerHeight;

bodyHeight=document.documentElement.clientHeight;

}var h=[scrollHeight,windowHeight,bodyHeight].sort(function(a,b){return(a-b);

});

return h[2];

},getDocumentWidth:function(){var docWidth=-1,bodyWidth=-1,winWidth=-1;

var marginRight=parseInt(this.getStyle(document.body,'marginRight'),10);

var marginLeft=parseInt(this.getStyle(document.body,'marginLeft'),10);

var mode=document.compatMode;

if(mode||isIE){switch(mode){case'CSS1Compat':docWidth=document.documentElement.clientWidth;

bodyWidth=document.body.offsetWidth+marginLeft+marginRight;

winWidth=self.innerWidth||-1;

break;

default:bodyWidth=document.body.clientWidth;

winWidth=document.body.scrollWidth;

break;

}}else{docWidth=document.documentElement.clientWidth;

bodyWidth=document.body.offsetWidth+marginLeft+marginRight;

winWidth=self.innerWidth;

}var w=[docWidth,bodyWidth,winWidth].sort(function(a,b){return(a-b);

});

return w[2];

},getViewportHeight:function(){var height=-1;

var mode=document.compatMode;

if((mode||isIE)&&!isOpera){switch(mode){case'CSS1Compat':height=document.documentElement.clientHeight;

break;

default:height=document.body.clientHeight;

}}else{height=self.innerHeight;

}return height;

},getViewportWidth:function(){var width=-1;

var mode=document.compatMode;

if(mode||isIE){switch(mode){case'CSS1Compat':width=document.documentElement.clientWidth;

break;

default:width=document.body.clientWidth;

}}else{width=self.innerWidth;

}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 {"+"t: "+this.top+", r: "+this.right+", b: "+this.bottom+", l: "+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){this.x=x;

this.y=y;

this.top=y;

this[1]=y;

this.right=x;

this.bottom=y;

this.left=x;

this[0]=x;

};

YAHOO.util.Point.prototype=new YAHOO.util.Region();