var x1 = 50,y1 = 60 
var xin = true, yin = true 
var step = 1 
var delay = 10 
var obj=document.getElementById("www_qpsh_com") 
obj.style.display='block';
function floatwww_qpsh_com() { 
var L=T=0
var R= document.body.clientWidth-obj.offsetWidth 
var B = document.body.clientHeight-obj.offsetHeight 
obj.style.left = x1 + document.body.scrollLeft 
obj.style.top = y1 + document.body.scrollTop 
x1 = x1 + step*(xin?1:-1) 
if (x1 < L) { xin = true; x1 = L} 
if (x1> R){ xin = false; x1 = R} 
y1 = y1 + step*(yin?1:-1) 
if (y1 < T) { yin = true; y1 = T } 
if (y1 > B) { yin = false; y1= B } 
} 
var itl= setInterval("floatwww_qpsh_com()", delay) 
obj.onmouseover=function(){clearInterval(itl)} 
obj.onmouseout=function(){itl=setInterval("floatwww_qpsh_com()", delay)} 


floatwww_qpsh_com();