<script>
function showmenu(id) {
var list = document.getElementById("list"+id);
var menu = document.getElementById("menu"+id)
if (list.style.display=="none") {
document.getElementById("list"+id).style.display="block";
menu.className = "title1";
}else {
document.getElementById("list"+id).style.display="none";
menu.className = "title";
}
}
</script>
<body>
<div id="nav">
<div class="title" id="menu1" onclick="showmenu('1') ">Ajax下载</div>
<div id="list1" class="content" style="display:none">
<ul>
<li>jQuery</li>
<li>Extjs</li>
<li>Mootools</li>
</ul>
</div>
<div class="title" id="menu2" onclick="showmenu('2')">网页代码</div>
<div id="list2" class="content" style="display:none">
<ul>
<li>菜单导航</li>
<li>层和布局</li>
<li>图片切换</li>
</ul>
</div>
</div>
</body>
