简单问题相信大家一定知道

好象是layer的效果吧，你到百度搜索一下，有不少这方面的特效

解决方案 »

  1.   

    去javascript版 搜吧~
    就是用div层+鼠标事件~
      

  2.   

    给你一个示例吧<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <title>无标题文档</title>
    <script language="JavaScript" type="text/JavaScript">
    <!--
    function MM_reloadPage(init) {  //reloads the window if Nav4 resized
      if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
        document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
      else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
    }
    MM_reloadPage(true);
    //-->
    </script>
    </head><body>
    <table width="200" border="0" cellspacing="0" cellpadding="0">
      <tr>
        <td width="100" bgcolor="#CCCCCC" onMouseOver="Layer1.style.visibility=''" onMouseOut="Layer1.style.visibility='hidden'">
    <div id="Layer1" style="position:absolute; width:100px; height:60px; z-index:1; visibility: hidden;"> 
            <table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#BCC0F8">
              <tr>
                <td height="20">&nbsp;</td>
              </tr>
              <tr>
                <td height="20">&nbsp;</td>
              </tr>
              <tr>
                <td height="20">&nbsp;</td>
              </tr>
            </table>
          </div></td>
        <td bgcolor="#CCCCCC">&nbsp;</td>
      </tr>
    </table>
    </body>
    </html>