// Find the x,y location in pixels for a relatively positioned object
// returns an object with .x and .y properties.
function FindXY(obj){
	var x=0,y=0;
	while (obj!=null){
		x+=obj.offsetLeft-obj.scrollLeft;
		y+=obj.offsetTop-obj.scrollTop;
		obj=obj.offsetParent;
	}
	return {x:x,y:y};
}

// Find the x,y location in pixels for a relatively positioned object
// returns an object with .x, .y, .w (width) and .h (height) properties.
function FindXYWH(obj){
	var objXY = FindXY(obj);
	if(!obj) return false;
	return objXY?{ x:objXY.x, y:objXY.y, w:obj.offsetWidth, h:obj.offsetHeight }:{ x:0, y:0, w:0, h:0 };
}