HTML

<div id="my_menu" class="sdmenu"> 
    <div> 
        <span>在线工具</span> 
        <div class="submenus"> 
            <a href="http://www.sucaihuo.com/templates">企业模板</a> 
            <a href="http://www.sucaihuo.com/templates">商城模板</a> 
            <a href="http://www.sucaihuo.com/templates">个人模板</a> 
            <a href="http://www.sucaihuo.com/templates">专题模板</a> 
            <a href="http://www.sucaihuo.com/templates">后台模板</a> 
            <a href="http://www.sucaihuo.com/templates">行业模板</a> 
        </div> 
    </div> 
    <div> 
        <span>支持我们</span> 
        <div class="submenus"> 
            <a href="http://www.sucaihuo.com/">推荐我们</a> 
            <a href="http://www.sucaihuo.com/">链接我们</a> 
            <a href="http://www.sucaihuo.com/">网络资源</a> 
        </div> 
    </div> 
</div>

jQuery

$(function() { 
    $("#my_menu").children("div").click(function() { 
        var obj = $(this); 
        obj.toggleClass("collapsed"); 
        obj.children(".submenus").slideToggle(600, 
        function() { 
            //toggleClass 
        }); 
   }) 
})