两种方法，推荐第二种！

第一种方法

<div class="catleader minicat">
	<ul class="sub-category">
		<?php
		$bclassid = $class_r[$GLOBALS[navclassid]][bclassid]; //获取当前父栏目ID
		$cr['classid']=$class_r[$GLOBALS[navclassid]][bclassid];
		$bclassurl=sys_ReturnBqClassname($cr,9);
		?>
		<li class="cat-item"> <a href="<?=$bclassurl?>">全部</a> </li>
		[e:loop={"select classid,classname from {$dbtbpre}enewsclass where bclassid='$bclassid' order by myorder,classid asc",0,24,0}]
			<?
			$classurl=sys_ReturnBqClassname($bqr,9);//取得栏目地址
			$on="";
			if($bqr[classid]==$GLOBALS[navclassid])//当前栏目ID
			{
			$on="current-cat";
			}
			?>
			<li class="cat-item  <?=$on?>"> 
				<a href="<?=$classurl?>"><?=$bqr[classname]?></a> 
			</li>
		[/e:loop]
	</ul>
</div>

第二种方法

<div class="catleader minicat">
	<ul class="sub-category">	
		<?php
		$bclassid = $class_r[$GLOBALS[navclassid]][bclassid]; //获取当前父栏目ID
		if($bclassid!=0){
			$cr['classid']=$class_r[$GLOBALS[navclassid]][bclassid];
			$bclassurl=sys_ReturnBqClassname($cr,9);
		}else{
			//父级栏目
			$bclassurl=sys_ReturnBqClassUrl($class_r[$GLOBALS[navclassid]]);
			$bclassid=$GLOBALS[navclassid];
		}
		?>
		<li ><a href="<?=$bclassurl;?>" id="nav<?=$bclassid?>">全部</a></li>
		[e:loop={"select * from `[!db.pre!]enewsclass` where bclassid='$bclassid' order by myorder,classid asc ",0,24,0,0,0}]
		<li><a href="<?=$bqsr[classurl]?>" id="nav<?=$bqr[classid]?>">
			<?=$bqr[classname]?>
			</a></li>
		[/e:loop] 
		<script>
			$(document).ready(function(){     
			 $("#nav[!--self.classid--]").addClass("active");    
			});
		</script>
	</ul>
</div>