선택 객체의 좌표구하기

참조 : http://milkteakang.tistory.com/14

 

function getAbsolutePos(obj) {
	var position = new Object;
	position.x = 0;
	position.y = 0;
	if( obj ) {
		position.x = obj.offsetLeft + obj.clientLeft;
		position.y = obj.offsetTop + obj.clientTop;
		if( obj.offsetParent ) {
			var parentpos = getAbsolutePos(obj.offsetParent);
			position.x += parentpos.x;
			position.y += parentpos.y;
		}
	}
	return position;
}