<script language=javascript> <!-- function ReverseCheckList(){ for(var i=0;i<document.listform.elements.length;i++){ var e=document.listform.elements[i]; e.checked=!e.checked; } } //--> </script> <form method="post" name="listform"> <table> <tr> <td width=40 height=20 onClick="javascript:ReverseCheckList()" STYLE='cursor:hand'>全选</td> <td>程序语言</td> </tr> <tr> <td height=20><input type="checkbox" name="selectid" ></td> <td height=20>javascript</td> </tr> <tr> <td height=20><input type="checkbox" name="selectid"></td> <td height=20>VBscript</td> </tr> <tr> <td height=20><input type="checkbox" name="selectid"></td> <td height=20>ASP.NET</td> </tr> </table> </form>