/*
** ���井��鐚�nodelink,floatobj,x,y,main,space,locate
**1��綽�蕁紫�����井���floatobj鐚�y鐚�locate,
**2��絋���篏睡��html膸�����鐚���筝���荀�nodelink
**3��絋���篏�臀����阪���鐚���筝���荀�main��space
**4��絋���篏�臀���蕁級�≫���筝私����鰹���筝���荀�x
*/
	var floatad = function(obj){
		var mainnode = $("." + obj.main)[0];
		if(obj.nodelink && (typeof obj.nodelink == "string")){
			var newfloatobj = document.createelement("div");
			newfloatobj.id = obj.floatobj;
			newfloatobj.style.position = "absolute";
			newfloatobj.style.zindex = 10;
			newfloatobj.innerhtml = obj.nodelink;
			document.body.appendchild(newfloatobj);
		}
		this.ad = document.getelementbyid(obj.floatobj);
		this.main = document.getelementbyid(obj.main)||mainnode;
		this.x = obj.x;
		this.y = obj.y;
		this.locate = obj.locate;
		this.space = obj.space;
		var that = this;
		this.play = function(){
			setinterval(function(){
				that.calculate();
			},10);
		};
	}
	floatad.prototype = {
		constructor : floatad,
		calculate : function(){
			var obj_x = this.x,
			    obj_y = this.y,
			    main_offsetleft = document.documentelement.scrollleft||document.body.scrollleft,
			    main_offsettop = document.documentelement.scrolltop||document.body.scrolltop;
			if(this.main){
				if(this.locate == "left"){
					obj_x = this.main.offsetleft - this.ad.offsetwidth - this.space;
				}else if(this.locate == "right"){
					obj_x = this.main.offsetleft + this.main.offsetwidth + this.space;
				}
				if(this.ad.offsetleft != main_offsetleft + obj_x){
					var dx = (main_offsetleft + obj_x - this.ad.offsetleft)*0.08;
					dx = (dx > 0 ? 1 : -1)*math.ceil(math.abs(dx));
					this.ad.style.left = this.ad.offsetleft + dx + "px";
				}	
			}else{
				if(this.locate == "left"){
					this.ad.style.left = obj_x + "px";
				}else if(this.locate == "right"){
					this.ad.style.right = obj_x +"px";
				}
			}
			if(this.ad.offsettop != main_offsettop + obj_y){
				var dy = (main_offsettop + obj_y - this.ad.offsettop)*0.08;
				dy = (dy > 0 ? 1 : -1)*math.ceil(math.abs(dy));
				this.ad.style.top = this.ad.offsettop + dy + "px";
			}
		}
	}