http://www.csdn.net/Develop/read_article.asp?id=16536给你一个简单的:
-------------------------------------
<table>
<tr onclick="if(this.nextSibling.style.display=='none')this.nextSibling.style.display='block';else this.nextSibling.style.display='none'">
<td>菜单一</td>
</tr>
<tr style="display:none">
<td>
<table>
<tr>
<td>子菜单一</td>
</tr>
<tr>
<td>子菜单二</td>
</tr>
</td>
</tr>
</table>
----------------------------------------
-------------------------------------
<table>
<tr onclick="if(this.nextSibling.style.display=='none')this.nextSibling.style.display='block';else this.nextSibling.style.display='none'">
<td>菜单一</td>
</tr>
<tr style="display:none">
<td>
<table>
<tr>
<td>子菜单一</td>
</tr>
<tr>
<td>子菜单二</td>
</tr>
</td>
</tr>
</table>
----------------------------------------
http://mindon.topcities.com/menu.zip
功能强大:
http://www.ouzx.com/
树菜单是资料是从 DataBase 来的全动态生成