// objÀÇ Àüü offsetLeft¸¦ ±¸ÇÑ´Ù.
function getTotalOffsetLeft(obj) {
	var rtn = obj.offsetLeft;
	while(obj.offsetParent != null){
		obj = obj.offsetParent;
		rtn += obj.offsetLeft;
	}
	return rtn;
}

// objÀÇ Àüü offsetTop¸¦ ±¸ÇÑ´Ù.
function getTotalOffsetTop(obj) {
	var rtn = obj.offsetTop;
	while(obj.offsetParent != null){
		obj = obj.offsetParent;
		rtn += obj.offsetTop;
	}
	return rtn;
}