/* Copyright (c) 2006 Yahoo! Inc. All rights reserved. */
YAHOO.util.Dom=new function()
{
    this.get=function(el)
    {
        if(typeof el=='string')
        {
            el=document.getElementById(el);
        }
    return el;
    };

this.getStyle=function(el,property)
{
var value=null;
var dv=document.defaultView;
el=this.get(el);
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(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,'').getPropertyValue(converted))
{
    value=dv.getComputedStyle(el,'').getPropertyValue(converted);
}
}
return value;
};


this.setStyle=function(el,property,val)
{
    el=this.get(el);
    switch(property)
    {
        case'opacity':
        if(el.filters)
        {
            el.style.filter='alpha(opacity='+val*100+')';
            if(!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.getXY=function(el)
{
    el=this.get(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=document.documentElement.scrollTop||document.body.scrollTop;
        var scrollLeft=document.documentElement.scrollLeft||document.body.scrollLeft;
        return[box.left+scrollLeft,box.top+scrollTop];
     }
    else if(document.getBoxObjectFor)
    {
        box=document.getBoxObjectFor(el);pos=[box.x,box.y];
    }
    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;
            }
         }
        var ua=navigator.userAgent.toLowerCase();
        if(ua.indexOf('opera')!=-1||(ua.indexOf('safari')!=-1&&this.getStyle(el,'position')=='absolute'))
        {
            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;
};


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

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

this.setXY=function(el,pos,noRetry)
{
    el=this.get(el);
    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]=0;
}
if(isNaN(delta[1]))
{
    delta[1]=0;
}
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]))
{
    this.setXY(el,pos,true);
}
return true;
};

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

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

this.getRegion=function(el)
{
    el=this.get(el);
    return new YAHOO.util.Region.getRegion(el);
};

this.getClientWidth=function()
{
    return(document.documentElement.offsetWidth||document.body.offsetWidth);
};

this.getClientHeight=function()
{
    return(self.innerHeight||document.documentElement.clientHeight||document.body.clientHeight);
};
};

YAHOO.util.Region=function(t,r,b,l)
{
    this.top=t;this.right=r;this.bottom=b;this.left=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.right=x;this.bottom=y;this.left=x;};YAHOO.util.Point.prototype=new YAHOO.util.Region();