yzmcms 导航选定效果

<div>
<ul>
<li > <a href="/"> 网站首页 </a> </li>
{m:nav field="catid,catname,arrchildid,pclink,target" where="parentid=0" limit="20"}
{loop $data $v}
<li {if isset($catid) && $v['catid']==$catid} class="on" {/if}> <a href="{$v[pclink]}">{$v[catname]}</a>
<ol> {if $v['arrchildid']!=$v['catid']} {php $r = get_childcat($v['catid']);} {loop $r $v}
<li><a href="{$v[pclink]}">{$v[catname]}</a></li>
{/loop} {/if}
</ol>
</li>
{/loop}
</ul>
</div>

<a href="/" class="">首页</a>
{m:nav field="catid,catname,arrchildid,pclink,target" where="parentid=0" limit="7"}
{loop $data $v} <a {if isset($catid) && in_array($catid, explode(',', $v['arrchildid']))} class="on" {/if} href="{$v[pclink]}" target="{$v[target]}">{$v[catname]}</a>
{/loop}