三级菜单导航

<li class="{eyou:eq name='$Request.param.m' value='Index'}hover{/eyou:eq}">

<a href="{eyou:global name='web_cmsurl' /}">首页</a></li>

{eyou:channel type="top" row="60" id="field" currentstyle="hover"}

<li class="{$field.currentstyle}"><a href="{$field.typeurl}">{$field.typename}</a>

{eyou:notempty name="$field.children"}

<ul class="subnav">

eyou:channel name="$field.children" row="100" id="field2"}

<li><a href="{$field2.typeurl}">{$field2.typename}</a>

{eyou:notempty name="$field2.children"}

<ul class="subnav2">

{eyou:channel name="$field2.children" row="100" id="field3"}

<li><a href="{$field2.typeurl}">{$field3.typename}</a> </li>

{/eyou:channel}   

</ul> 

{/eyou:notempty}  

</li>

{/eyou:channel}   

</ul>

{/eyou:notempty}

</li>

{/eyou:channel}