<html>
  <head>
    <title>Lis.html</title>  
<style type="text/css"> 
<!-- 
.a{    
background:#ffffff; 
filter: Alpha(opacity=50); 
width:200px; 
height:230px; 
position:absolute; 
border-right:1px solid #0066FF; 
border-bottom:1px solid #0066FF; 
border-top:1px solid #0066FF; 
border-left:1px solid #0066FF; } 
.a1 

height:200px;} 
.a2 

background:#0066FF; 
filter: Alpha(opacity=80); 
height:30px;}    
--> 
</style> <script> 
function a() 

document.getElementById("f").style.display="" 
document.getElementById("f").style.left=event.clientX+8 
document.getElementById("f").style.top=event.clientY+18 

function b() 

document.getElementById("f").style.display="none" 
document.getElementById("e").border="0" } 
$=function (id){return document.getElementById(id);}
  </script> 
 </head>
<body> 
<img style="cursor:hand;" id="e" src="http://mat1.qq.com/ent/upday2008/06184.jpg" width="328" height="240" border="0" onMouseMove="a()"  onmouseout="b()"/> 
<div id="f" class="a"> 点到猪的头像了
<div id="f1" class="a1"> </div> 
<div id="f2" class="a2"> </div> 
</div> 
</body>
自己看吧