document.write('<DIV  id=mov6  style="POSITION:  absolute;  width:  192px;  height:  168px"><img src="/images/zi.gif" width="192" height="168" alt="双击关闭"  ondblclick="mov6.style.display=\'none\';">双击关闭</DIV>');  
 
var  xPos  =  250;  
//var  yPos  =  document.body.clientHeight;  
var  yPos  =  0;  
var  step  =  1;  
var  delay  =  20;    
var  height  =  0;  
var  Hoffset  =  0;  
var  Woffset  =  0;  
var  yon  =  0;  
var  xon  =  0;  
var  pause  =  true;  
var  interval;  
mov6.style.top  =  yPos;  
function  changePos()  {  
width  =  document.body.clientWidth;  
height  =  document.body.clientHeight;  
Hoffset  =  mov6.offsetHeight;  
Woffset  =  mov6.offsetWidth;  
mov6.style.left  =  xPos  +  document.body.scrollLeft;  
mov6.style.top  =  yPos  +  document.body.scrollTop;  
if  (yon)  {  
yPos  =  yPos  +  step;  
}  
else  {  
yPos  =  yPos  -  step;  
}  
if  (yPos  <  0)  {  
yon  =  1;  
yPos  =  0;  
}  
if  (yPos  >=  (height  -  Hoffset))  {  
yon  =  0;  
yPos  =  (height  -  Hoffset);  
}  
if  (xon)  {  
xPos  =  xPos  +  step;  
}  
else  {  
xPos  =  xPos  -  step;  
}  
if  (xPos  <  0)  {  
xon  =  1;  
xPos  =  0;  
}  
if  (xPos  >=  (width  -  Woffset))  {  
xon  =  0;  
xPos  =  (width  -  Woffset);  
     }  
}  
function  start()  {  
mov6.visibility  =  "visible";  
interval  =  setInterval('changePos()',  delay);  
}  
 
start();