<script type="text/javascript">
function wHeight(){
var height = null;
window.innerHeight ? height = window.innerHeight : height = document.documentElement.clientHeight;
return height;
}
var bodyheight = wHeight();
var x = 50,y = 60
var xin = true, yin = true
var step = 1
var delay = 20
var obj=document.getElementById("codefans_net")
function floatAD() {
var L=T=0
var R= document.body.clientWidth-obj.offsetWidth;
var B = bodyheight-obj.offsetHeight;
obj.style.left = x+"px";
obj.style.top = y+"px";
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)}
</script>
