代码如下：
<script language="JavaScript1.2"> function changeto(highlightcolor){ source=event.srcElement if (source.tagName=="TR"||source.tagName=="TABLE") return while(source.tagName!="TD") source=source.parentElement if (source.style.backgroundColor!=highlightcolor&&source.id!="ignore") source.style.backgroundColor=highlightcolor } function changeback(originalcolor){ if (event.fromElement.contains(event.toElement)||source.contains(event.toElement)||source.id=="ignore") return if (event.toElement!=source) source.style.backgroundColor=originalcolor } </script><table width="30%" border="0" cellspacing="1" cellpadding="3" onMouseover="changeto('lightgreen')" onMouseout="changeback('white')" bgcolor="#000000"> <tr> <td bgcolor="#f7f7f7"><a href="＃" target="_blank">1.测试一</a></td> </tr> <tr> <td bgcolor="#f7f7f7"><a href="＃" target="_blank">2.测试二</a></td> </tr> <tr> <td bgcolor="#f7f7f7"><a href="＃" target="_blank">3.测试三</a></td> </tr> <tr> <td bgcolor="#f7f7f7"><a href="＃" target="_blank">4.测试四</a></td> </tr> </table>