isIE=document.all;
isNN=!document.all&&document.getElementById;
isN4=document.layers;
isHot=false;
function chiudi(){
if (isIE||isNN){
	document.getElementById("LayerPr").style.visibility = "hidden"
	}else if (isN4){
	document.layers["LayerPr"].visibility='hide';	 
  }
}
Object.prototype.getPosXY=function(element) { 
	if(element){
		this.x += element.offsetLeft; 
		this.y += element.offsetTop; 
		element= element.offsetParent; 
	    this.getPosXY(element)
		}
	return this; 
} 
	
function PosXY(){

if (isIE||isNN){
	var	Coords={x: 0, y: 0}
    var XY=Coords.getPosXY(document.getElementById("xy"))	
	document.getElementById("LayerPr").style.left=40+XY.x
	document.getElementById("LayerPr").style.top=150;
		}else if (isN4){
	var	Coords={x: 0, y: 0}
    var XY=Coords.getPosXY(document.layers["xy"])			
	document.layers["LayerPr"].left=40+XY.x
	document.layers["LayerPr"].top=150;
}

}
document.onmousemove=PosXY