大佬们  我的导航 代码是这样写的

 <dd id="menu_1" >
                    <!--一级栏目-->
                    {category module=share id=7}

                    <h3 ><a href="{$t.url}">医院概况</a></h3>

                    {/category}

                    <ul class="left_01">

                        {category module=share pid=1 return=c1}

                        <li class="more"><a href="{$c1.url}">{$c1.name}</a>

                        {/category}

                    </ul>

                </dd>

                <dd id="menu_2">
                    <!--一级栏目-->
                     {category module=share id=15}

                    <h3 ><a href="{$t.url}">特色诊疗</a></h3>

                    {/category}

                    <ul class="left_01">

                        {category module=share pid=2 return=c1}

                        <li class="more"><a href="{$c1.url}">{$c1.name}</a>

                        {/category}

                    </ul>

                </dd>

然后如何判断栏目高亮呢