//get div left position
function getAbsLeft(e) {
	var l = e.offsetLeft;
	while (e = e.offsetParent) {
		l += e.offsetLeft;
	}
	return l;
}  

//get div top position 
function getAbsTop(e) {
	var t = e.offsetTop;
	while (e = e.offsetParent) {
		t += e.offsetTop;
	}
	return t;
}