我想弄清楚一件事,我有一个单页网站,当其他菜单链接点击http://jsfiddle.net/kuuwj/15/时,我想隐藏投资组合下的子菜单
HTML
<ul id="navbar">
    <li><a href="#home" id="nav-home">Home</a></li>
    <li><a href="#portfolio" id="nav-portfolio">Portfolio</a>
        <div class="portfolio-apps">
         <section id="website">
            <span class="button">AAAAAAAAAAAAAAAAAAAAAA</span>
         </section>
         <section id="gterminal">
            <span class="button">BBBBBBBBBBBBBBBBBBBBBB</span>
         </section>
         <section>
            <span class="button">CCCCCCCCCCCCCCCCCCCCCC</span>
         </section>
        </div>
    </li>
    <li><a href="#about" id="nav-about">About Me</a></li>
    <li><a href="#contact" id="nav-contact">Contact</a></li>
   </ul>
JS
$(document).ready(function () {
    var portf_apps = $('.portfolio-apps');
    portf_apps.hide();
    $('#nav-portfolio').click(function() {
        portf_apps.show();
    });
      
});