请教个Jquery的实现问题.

  <div id="menu">
            <ul>
                <li class="home first"><a href="/"  class="home"><span><span>首页</span></span></a></li>
                <li class="our-work"><a href="/content/List/2_1.htm"  class="product-services"><span><span>产品与服务</span></span></a></li>
                <li class="our-services"><a href="/content/List/2_1.htm"  class="news"><span><span>公司新闻</span></span></a></li>
                <li class="about-us"><a href="/content/view/2/1.htm"  class="about-us"><span><span>关于我们</span></span></a></li>
                <li class="resources"><a href="/content/List/2_1.htm"  class="resources"><span><span>人力资源</span></span></a></li>
                <li class="contact-us last"><a href="/content/view/2/1.htm" class="contact-us"><span><span>联系我们</span></span></a></li>
            </ul>
        </div>
<!--[if !IE]>顶部结束<![endif]-->
<!--[if !IE]> 中栏开始 <![endif]-->
  <div id="main">
        <h3 id="curmenu">公司新闻</h3>
然后在页脚加入JS

 

<script type="text/javascript">
    $(document).ready(function () {
        if ($('#curmenu').length == 0) {
            $('.home').addClass('current');
        }
        else {
            var cur = $('#curmenu').text();
            $('#menu').find('li').find('a').find('span').find('span').each(function () {
                if (cur == $(this).text()) {
                    $(this).parents('a').addClass('current');
                }
            });
        }
    });
</script>