<table>
<tr onclick=menuChange(this)>
<td>菜单一</td>
</tr>
<tr style="display:none">
<td style="padding-left:12px;">子菜单一</td>
</tr>
<tr onclick=menuChange(this)>
<td>菜单二</td>
</tr>
<tr style="display:none">
<td style="padding-left:12px;">子菜单二</td>
</tr>
</table>
<script language=javascript>
function menuChange(obj)
{
obj.nextSibling.style.display=(obj.nextSibling.style.display=='none'?'block':'none');
}
</script>
<tr onclick=menuChange(this)>
<td>菜单一</td>
</tr>
<tr style="display:none">
<td style="padding-left:12px;">子菜单一</td>
</tr>
<tr onclick=menuChange(this)>
<td>菜单二</td>
</tr>
<tr style="display:none">
<td style="padding-left:12px;">子菜单二</td>
</tr>
</table>
<script language=javascript>
function menuChange(obj)
{
obj.nextSibling.style.display=(obj.nextSibling.style.display=='none'?'block':'none');
}
</script>