用php调用父栏目下的子栏目并且高亮方法教程，代码自行套用即可。

<?php
if($class_r[$GLOBALS[navclassid]][bclassid]==0){
$classid=$GLOBALS['navclassid'];
$classname=$class_r[$classid][classname]; 
}else{
$classid=$class_r[$GLOBALS[navclassid]][bclassid];
$classname=$class_r[$classid][classname];
}
?>
<?php
$sql=$empire->query("select classid,sonclass,classname,islast,islist from {$dbtbpre}enewsclass where bclassid='$classid' and showclass=0 order by myorder,myorder asc");
    while($s=$empire->fetch($sql)){
    	$tclass="";
        $fr=explode('|',$class_r[$GLOBALS[navclassid]][featherclass]);
        $topbclassid=$fr[2]?$fr[2]:$GLOBALS[navclassid];
        if($topbclassid==$s[classid]){
        	$tclass='active';
        }
        $classurl=sys_ReturnBqClassname($s,9);
        echo '<li class="'.$tclass.'"><a class="'.$tclass.'" href="'.$classurl.'">'.$s[classname].'</a></li>';
        
    }
?>