document.write('<div id="ad" style="position:absolute"><a href="http://www.shktv8.com" target="_blank"><img src="Ad_Img/2009_6_7_17_45_30.gif" border="0" /></a></div>');

var x = 50,y = 60
var xin = true, yin = true
var step = 1 
var delay = 30
var obj=document.getElementById("ad") 
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)}