function show_data(strName,evt){ 
	var e ; 
	var nn6;
	var IE;
	var tempX,tempY;

	if (strName.length > 0){ 
		IE = document.all?true:false;
		nn6=document.getElementById&&!document.all;
		e = (window.event) ? window.event : evt;
			//checking browsers type.....		
		if(IE)
		{
			//grab the x-y pos.s if browser is IE
			tempX = event.clientX + document.body.scrollLeft;
			tempY = event.clientY + document.body.scrollTop;
		}
		else if(nn6)
		{
			tempX = e.clientX + window.pageXOffset;
			tempY = e.clientY + window.pageYOffset;
		}
		document.getElementById("layer0").style.top = tempY+"px";
		document.getElementById("layer0").style.left = tempX+"px";
	} else { 
		document.getElementById('layer0').innerHTML = ""; 
	} 
	document.getElementById('layer0').innerHTML = map[strName];
}

function hideLayer()
{
	document.getElementById("layer0").style.visibility ="hidden";					
}

function removeLayer()
{
  document.getElementById("layer0").style.top = 0;
  document.getElementById("layer0").style.left = 0;
  document.getElementById('layer0').innerHTML = "";
}