帝国cms中关于[!--newsnav--]的问题

//当前位置导航
function user_linknav($classid)
{
global $empire,$dbtbpre;
$query="select classname,bclassid,classpath from {$dbtbpre}enewsclass where classid=".$classid;
$sql=$empire->query($query);
//echo "<a href = /"//">首 页</a>";
while($r=$empire->fetch($sql))
{
findparent($r[bclassid]);
echo "&nbsp;>&nbsp;<a href =/"/".$r[classpath]."/">".$r[classname]."</a>";
}
}
//当前位置导航，递归查询父栏目
function findparent($classid)
{
global $empire,$dbtbpre;
$query="select classname,bclassid,classpath from {$dbtbpre}enewsclass where classid=".$classid;
$sql=$empire->query($query);
while($r=$empire->fetch($sql))
{
findparent($r[bclassid]);
echo "&nbsp;>&nbsp;<a href =/"/".$r[classpath]."/">".$r[classname]."</a>";
}
}