织梦调用当前栏目的顶级栏目的办法

function GetTopTypeName($typeid)
{
	global $dsql;
	$typeRow =  $dsql->GetOne("SELECT typename,topid FROM dede_arctype WHERE id= $typeid");
	 if ($typeRow['topid'] == '0')
    {
        return $typeRow['typename'];
    }
    else
    {
        $typeRow1 = $dsql->GetOne("SELECT typename FROM dede_arctype WHERE id= $typeRow[topid]");
        return $typeRow1['typename'];
    }
}