当位于顶级栏目显示下级栏目，当位于二级栏目显示同级栏目，当位于三级目录，显示上级栏目

        $row2 = $dsql->GetOne("SELECT * FROM `#@__arctype` WHERE id='$typeid' ");
        $typeid = $row2['id'];
        $reid = $row2['reid'];
        $topid = $row2['topid'];
        $issetInfos = true;
    }
    
    if($type=='' || $type=='sun') $type='son';
    if($type=='reid' && $topid == '0'  ) $type='son';
    if($innertext=='') $innertext = GetSysTemplets("channel_list.htm");

include aglibchannel.lib.php 

        {dede:channel type='reid' noself='yes' currentstyle='
        <li class="thisclass"><a href="~typelink~">~typename~</a></li>
        '}
        <li><a href="[field:typeurl/]">[field:typename/]</a></li>{/dede:channel}