// JavaScript Document

var dong;
if(!dong){
	dong = {};
}
if(!dong.web){
	dong.web={};
}

dong.web.Util = function(){
	
};

/**
 * moveObjFromObj
 * @param {Object} o1 被移动对象, {Object} o2 相对对象, {int} x , {int} y 
 */
dong.web.Util.prototype.moveObjFromObj = function(o1,o2,x,y){
	var t = o2;
	var tx = t.offsetLeft;
	var ty = t.offsetTop;
	while (t=t.offsetParent) {
		tx+=t.offsetLeft;
		ty+=t.offsetTop;
	}
	tx += x;
	ty += y;

	o1.style.left = tx+"px";
	o1.style.top = ty+"px";
};