菜动折起和展开问题??

最常用是把子菜单div里面，通过控制div的display=none/block实现折叠、展开当然有其他重写菜单的方法

解决方案 »

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这些东西:给你个代码:
<head>
<title> New Document </title>
<style>
body {
  font-family: verdana, helvetica, arial, sans-serif;
}#mainMenu {
  background-color: #EEE;
  border: 1px solid #CCC;
  color: #000;
  width: 203px;
}#menuList {
  margin: 0px;
  padding: 10px 0px 10px 15px;
}li.menubar {
  background: url(/images/plus.gif) no-repeat 0em 0.3em;
  font-size: 12px;
  line-height: 1.5em;
  list-style: none outside;
}.menu, .submenu {
  display: none;
  margin-left: 15px;
  padding: 0px;
}.menu li, .submenu li {
  background: url(/images/square.gif) no-repeat 0em 0.3em;
  list-style: none outside;
}a.actuator {
  background-color: transparent;
  color: #000;
  font-size: 12px;
  padding-left: 15px;
  text-decoration: none;
}a.actuator:hover {
  text-decoration: underline;
}.menu li a, .submenu li a {
  background-color: transparent;
  color: #000;
  font-size: 12px;
  padding-left: 15px;
  text-decoration: none;
}.menu li a:hover, submenu li a:hover {
  /*border-bottom: 1px dashed #000;*/
  text-decoration: underline;
}span.key {
  text-decoration: underline;
}
</style>
<meta name="Generator"  content="EditPlus"/>
<meta name ="Author"  content =""/>
<meta name ="Keywords"  content =""/>
<meta name="Description" content =""/>
</head><body>
<script language ="javascript" >
if (!document.getElementById)
    document.getElementById = function() { return null; }function initializeMenu(menuId, actuatorId) {
    var menu = document.getElementById(menuId);
    var actuator = document.getElementById(actuatorId);    if (menu == null || actuator == null) return;    //if (window.opera) return; // I'm too tired    actuator.parentNode.style.backgroundImage = "url(/images/plus.gif)";
    actuator.onclick = function() {
        var display = menu.style.display;
        this.parentNode.style.backgroundImage =
            (display == "block") ? "url(/images/plus.gif)" : "url(/images/minus.gif)";
        menu.style.display = (display == "block") ? "none" : "block";        return false;
    }
}
window.onload = function() {
            initializeMenu("productsMenu", "productsActuator");
            initializeMenu("newPhonesMenu", "newPhonesActuator");
            initializeMenu("compareMenu", "compareActuator");
        }
</script>
<div id="mainMenu">
      <ul id="menuList">
        <li class="menubar">
          <a href="#" id="productsActuator" class="actuator">图秀地带收藏夹</a>
          <ul id="productsMenu" class="menu">
            <li>
              <a href="#" id="newPhonesActuator" class="actuator">我的好友</a>
              <ul id="newPhonesMenu" class="submenu">
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">张三[10000001]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">李四[10000002]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">张三[10000001]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">李四[10000002]</a></li>
              </ul>
            </li>
            <li>
              <a href="#" id="compareActuator" class="actuator">陌生人</a>
              <ul id="compareMenu" class="submenu">
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">张三[10000001]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">李四[10000002]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">张三[10000001]</a></li>
                <li><a href="http://mc.mapabc.com/mapcard/card.jsp?pp=1000000001">李四[10000002]</a></li>
              </ul>
            </li>
          </ul>
        </li>
      </ul>
    </div>
  </body></html>
你直接把这个代码放到.htm页面中就可以了.你可以测试一下看看
非常感谢天谢gezichong!!很需要这样的例子!