求一个脚本?
当你把鼠标放在一个链接上时,会显示一个菜单。    
 http://www.ccb.com/portal/cn/home/index.html    
 当你把鼠标放在   对私服务   时的效果,怎么做?
------解决方案-------------------- <!DOCTYPE html PUBLIC  "-//W3C//DTD XHTML 1.0 Transitional//EN "  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  
  <html xmlns= "http://www.w3.org/1999/xhtml ">  
  <head>  
  <meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />  
  <title> 无标题文档 </title>  
  <style type= "text/css ">  
  <!-- 
 #Layer1 { 
 	position:absolute; 
 	width:107px; 
 	height:120px; 
 	z-index:1; 
 	background-color: #CCCCCC; 
 	display:none; 
 	top: 32px; 
 	left: 11px; 
 } 
 #Layer2 { 
 	position:absolute; 
 	width:122px; 
 	height:120px; 
 	z-index:2; 
 	left: 170px; 
 	top: 32px; 
 	background-color: #CCCCCC; 
 	display:none; 
 } 
 #Layer3 { 
 	position:absolute; 
 	width:127px; 
 	height:120px; 
 	z-index:3; 
 	left: 333px; 
 	top: 32px; 
 	background-color: #CCCCCC; 
 	display:none; 
 } 
 -->  
  </style>  
  </head>    
  <body>  
  <div id= "Layer1 ">  
    <table width= "100% " border= "0 " cellspacing= "0 " cellpadding= "0 ">  
      <tr>  
        <td> 1 </td>  
      </tr>  
      <tr>  
        <td> 2 </td>  
      </tr>  
      <tr>  
        <td> 3 </td>  
      </tr>  
      <tr>  
        <td> 4 </td>  
      </tr>  
      <tr>  
        <td> 5 </td>  
      </tr>  
      <tr>  
        <td> 6 </td>  
      </tr>  
    </table>  
  </div>  
  <div id= "Layer2 ">  
    <table width= "100% " border= "0 " cellspacing= "0 " cellpadding= "0 ">  
      <tr>  
        <td> 1 </td>  
      </tr>  
      <tr>  
        <td> 2 </td>  
      </tr>  
      <tr>  
        <td> 3 </td>  
      </tr>  
      <tr>  
        <td> 4 </td>  
      </tr>  
      <tr>  
        <td> 5 </td>  
      </tr>  
      <tr>  
        <td> 6 </td>  
      </tr>  
    </table>  
  </div>  
  <div id= "Layer3 ">  
    <table width= "100% " border= "0 " cellspacing= "0 " cellpadding= "0 ">  
      <tr>  
        <td> 1 </td>  
      </tr>  
      <tr>  
        <td> 2 </td>  
      </tr>  
      <tr>  
        <td> 3 </td>  
      </tr>  
      <tr>  
        <td> 4 </td>  
      </tr>  
      <tr>  
        <td> 5 </td>  
      </tr>  
      <tr>  
        <td> 6 </td>  
      </tr>  
    </table>  
  </div>  
  <table width= "50% " border= "0 " cellspacing= "0 " cellpadding= "0 ">  
    <tr>  
      <td>  <a href= "# " onmouseover= "Layer1.style.display= 'block '; " onmouseout= "Layer1.style.display= 'none