dedecms 二级导航的实现代码

分享下dedecms导航代码，如下：

<ul id="topmenue">      <li class="first" id="mn_portal"><a href="/" hidefocus="true" title="Portal">网站首页<span>Portal</span></a></li>   {dede:channelartlist typeid={dede:field.typeid/}    <li id="mn_N5f30" onmouseover="t('{dede:field name='typeid'/}');" onmouseout="f('{dede:field name='typeid'/}');" name="{dede:field name='typeid'/}">     <a href="{dede:field name='typeurl'/}" [field:rel/] >{dede:field name='typename'/}</a>  <ul id="snav" name="{dede:field.typeid/}">  {dede:channel type='son' noself='yes'}    <li style="display:block;height:40px;margin:0;padding:0;clear:both;background:none;text-align:cnetent;line-height:40px;background:#F4FBF4;"><a href="[field:typelink /]" >[field:typename /]</a></li>  {/dede:channel}  </ul></li>  {/dede:channelartlist}   </ul><ul id="topmenue">    <li class="first" id="mn_portal"><a href="www.genban.org/" hidefocus="true" title="Portal">网站首页<span>Portal</span></a></li>{dede:channelartlist typeid={dede:field.typeid/}  <li id="mn_N5f30" onmouseover="t('{dede:field name='typeid'/}');" onmouseout="f('{dede:field name='typeid'/}');" name="{dede:field name='typeid'/}">   <a href="{dede:field name='typeurl'/}" [field:rel/] >{dede:field name='typename'/}</a> <ul id="snav" name="{dede:field.typeid/}"> {dede:channel type='son' noself='yes'} <li style="display:block;height:40px;margin:0;padding:0;clear:both;background:none;text-align:cnetent;line-height:40px;background:#F4FBF4;"><a href="[field:typelink /]" >[field:typename /]</a></li> {/dede:channel}  </ul>                                      </li>{/dede:channelartlist}                                   </ul>

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