function layershow(layername)
{
	document.getElementById(layername).style.visibility="visible";
}

function layerhide(layername)
{
	document.getElementById(layername).style.visibility='hidden';
}

function setlayerpox(layername,x,y)
{
  if (document.all)
    {
       document.all[layername].style.pixelLeft=x;
       document.all[layername].style.pixelTop=y;
	   return(1);
    }
  if (document.documentElement) {
       document.getElementById(layername).setAttribute("style","left:"+x+"px;top:"+y+"px;");
	   return(1);
    }
}

function getAbsoluteX(e0)
{
		//测一下e的绝对位置X
		e=e0;
		x=e.offsetLeft;
		while (e != document.body)
		{
			e=e.parentNode;
			eS=e.toString();
			if ( e.nodeName.indexOf("TR") == -1 && e.nodeName.indexOf("TBODY") == -1 )
			{ 
				x=x+e.offsetLeft;
			}	
		} 
		return(x);
}

function getAbsoluteY(e0)
{
		//测一下e的绝对位置Y
		e=e0;
		y=e.offsetTop;
		while (e != document.body)
		{
			e=e.parentNode;
			eS=e.toString();
			if ( e.nodeName.indexOf("TR") == -1 && e.nodeName.indexOf("TBODY") == -1 )
			{ 
				y=y+e.offsetTop;
			}	
		}
		return(y); 
}