var delta = 1;
var collection;
function floaters()
{
	this.items = [];
	this.addItem = function(id,t,x,y,content) {
		x = typeof(x) == 'string' ? eval(x) : x;
		y = typeof(y) == 'string' ? eval(y) : y;
		document.write('<div id="'+id+'" style="position:absolute;'+t+':'+x+'px;top:'+y+'px;z-index:10;">'+content+'</div>');

		var newItem = {};
		newItem.o = document.getElementById(id);
		newItem.t = t;
		newItem.x = x;
		newItem.y = y;

		this.items[this.items.length] = newItem;
	}
	this.play = function() {
		collection = this.items
		setInterval('floaters_play()',100);
	}
}
function floaters_play()
{
	for(var i=0;i<collection.length;i++)
	{
		var c = collection[i];
		var o = c.o;
		var t = c.t;
		var x = (typeof(c.x) == 'string' ? eval(c.x) : c.x);
		var y = (typeof(c.y) == 'string' ? eval(c.y) : c.y);

		var d_t = document.documentElement.scrollTop || document.body.scrollTop;
		if (o.offsetTop != (d_t + y))
		{
			var d_y = (d_t + y - o.offsetTop) * delta;
			d_y = (d_y > 0 ? 1 : -1) * Math.ceil(Math.abs(d_y));
			o.style.top = o.offsetTop + d_y + 'px';
		}
	}
}

var theFloaters = new floaters();
var floatTop = document.all ? 334 : 272;
theFloaters.addItem('followDiv1','left',1,floatTop,'<a href="http://www.caike.com/topic/tuiguang/" target="_blank"><img src="http://www.caike.com/v5_ad/ad_float_120x300_l.jpg" style="border:none;" /></a>');
theFloaters.addItem('followDiv2','right',1,floatTop,'<a href="http://www.caike.com/topic/tuiguang/" target="_blank"><img src="http://www.caike.com/v5_ad/ad_float_120x300_l.jpg" style="border:none;" /></a>');
theFloaters.play();