var floatDiv = Class.create({
	initialize:function(){
	},
	showdiv:function(){
		var x = 50,y = 60  
		var xin = true, yin = true  
		var step = 1  
		var delay = 10  
		var obj=$("floatadd")  
		function floatAD() {
		var L=T=0  
		var R= document.body.clientWidth-obj.offsetWidth  
		var B = document.body.clientHeight-obj.offsetHeight  
		obj.style.left = x + document.body.scrollLeft  
		obj.style.top = y + document.body.scrollTop  
		x = x + step*(xin?1:-1)  
		if (x < L) { xin = true; x = L}  
		if (x > R){ xin = false; x = R}  
		y = y + step*(yin?1:-1)  
		if (y < T) { yin = true; y = T }  
		if (y > B) { yin = false; y = B } 
		}
		var itl= setInterval("floatAD()", delay)  
		obj.onmouseover=function(){clearInterval(itl)}  
		obj.onmouseout=function(){itl=setInterval("floatAD()", delay)}
	},
	closeDiv:function(){
		$("floatadd").style.display="none";
	}
});
var floatdiv=new floatDiv();