当点击连接时，背景<td background="../images/images_dh1_6.gif" >变成另一个图片的js怎么写？

Question

<td id="test" background="../images/images_dh1_6.gif" ><div align="center"><a href="#" onclick="ddddd()">dfjk</a></div></td> <script>
ddddd()
{
   test.style.background = "../images/images_other.gif";
}
</script>

Answer 1

<script>
function change_tdbg()
{
eval(ex).style.background="../images/ex.gif";}</script>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%" id="AutoNumber1">
  <tr>
    <td id=ex width="50%" background="../images/images_dh1_6.gif" >　
    
    <div align="center"><a href="#"><font size=2 onclick="change_tdbg()">dfjk</font></a></div></td>
    <td width="50%">　</td>
  </tr>
  <tr>
    <td width="50%">　</td>
    <td width="50%">　</td>
  </tr>
</table>