帝国cms灵动标签怎么无限嵌套的方法

<table width="500" border="1" align="center" cellpadding="0" cellspacing="0" bordercolor="#CC33CC">
<?php
$ecms_bq_sql=sys_ReturnEcmsLoopBq('select classid,classname,classpath,wburl from [!db.pre!]enewsclass where bclassid=0 and showclass=0 order by myorder',0,24,0);
$bqno=0;
while($bqr=$empire->fetch($ecms_bq_sql))
{
$bqsr=sys_ReturnEcmsLoopStext($bqr);
$classid=($bqr[classid]);
$classurl=sys_ReturnBqClassname($bqr,9);
$bqno++;
?>
<tr>
<td><h1><a href="<?=$classurl?>"  target="_blank"><?=$bqr[classname]?></a></h1></td>
</tr>
<?php
$ecms_bq_sql2=sys_ReturnEcmsLoopBq("select classid,classname from {$dbtbpre}enewsclass where bclassid=$classid order by myorder,classid asc",0,24,0);         
$bqno2=0;
while($bqr2=$empire->fetch($ecms_bq_sql2))
{
$bqsr2=sys_ReturnEcmsLoopStext($bqr2);
$classurl=sys_ReturnBqClassname($bqr2,9);
$classid2=($bqr2[classid]);
$bqno2++;
?>
<tr>
<td height="54"><h4 style="margin-left:180px;"><a href="<?=$classurl?>" target="_blank"><?=$bqr2[classname]?></a></h4></td>
</tr>
<tr>
<td>
[e:loop={$classid2,10,0,0}]
<li><a href="<?=$bqsr['titleurl']?>" target="_blank"><?=$bqr['title']?></a> </li>
[/e:loop]
</td>
</tr>
<?php
}
?>
<?php
}
?>
</table>

while($bqr=$empire->fetch($ecms_bq_sql))

while($bqr2=$empire->fetch($ecms_bq_sql2))