织梦怎么调用顶级栏目以及下面的二级栏目

{dede:channelartlist typeid='top'} 
{dede:field name='typename'/} 
 {dede:channel type='son' noself='yes'} 
[field:typename/]
 {/dede:channel} 
 
 {/dede:channelartlist}

{dede:channelartlist typeid='top'} 
{dede:field name='typename'/} 
 {dede:channel type='son' noself='yes'} 
[field:typename/]
 {/dede:channel} 
 
 {/dede:channelartlist}

 
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 {dede:channelartlist typeid='top'} {dede:php} $thisid = $refObj->Fields['id']; $dsql->SetQuery("Select * from `dede_arctype` where reid=".$thisid." ORDER BY sortrank"); $dsql->Execute(); $i=0; while($arr = $dsql->getArray()){ $i = $i +1; $str = implode(',',$arr); if(!empty($str) && $i==1){ echo '
'; } echo '
'.$arr['typename'].'
'; } if(!empty($str)) echo '
'; if(empty($str)){ echo '
'; } {/dede:php} {dede:field name='typename'/} 
 {/dede:channelartlist}