论坛左边那个分层索引怎么做啊，会的99啊！！！
我同学问我，我也不知道，哪位大虾教下，好去哄人啊。

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<table width= "100% " height= "20 " border= "0 " cellspacing= "0 " cellpadding= "0 "
onclick= "javascript:sss(document.all.c); " style= "cursor:hand " align= "center ">
<tr>
<td bgcolor= "#ffffff "> <b> &nbsp;管理中心 </b> </td>
</tr>
</table>
<table width= "100% " height= "5 " border= "0 " cellspacing= "0 " cellpadding= "0 ">
<tr>
<td height= "5 "> </td>
</tr>
</table>
<span name= "c " ID= "c ">
&nbsp; <a href= " "> 111 </a> <br>
&nbsp; <a href= " "> 222 </a> <br>
&nbsp; <a href= " "> 333 </a> <br>
&nbsp; <a href= " "> 444 </a> <br>
&nbsp; <a href= " "> 555 </a> <br>
</span>