代码如下： 
1.用{if $r[child]==0} menu_star {else} menu_head {/if} 判断是否有子栏目； 
2.用{if $top_parentid == $r[catid]||$catid==$r[catid]||$parentid==$r[catid]} current{/if}判断当子栏目打开时，父级栏目高亮。 

1. [sourcecode language="php"]
   

2. {pc:content action="category" catid="0" num="6" siteid="$siteid" order="listorder ASC"}
   

3. <li><a{if !$catid} class='selc'{/if} href="{siteurl($siteid)}">主页</a></li>
   

4. {loop $data $r}
   

5. <li><a{if $catid==$r[catid] || $top_parentid==$r[catid]} class='selc'{/if} href='{$r[url]}'>{$r[catname]}</a></li>
   

6. {/loop}
   

7. {/pc}
   

8. [/sourcecode]

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