DIV+CSS构成的树型菜单

这是用DIV+CSS+JS构成的树型菜单，采用列表,符合WEB标准，在大多数WIN浏览器下，兼容性不错，xhtml见效果页,我现在做的是二个菜单,如果需要添加,可把<ul class="collapsed" >查看效果。

CSS代码

body {
        margin: 0px;
        padding: 0;
        font: 12px " Arial, Helvetica, sans-serif;
        background: #FFFFFF;
        text-align: center;
}

ul{
        margin: 0;
        padding: 0;
        list-style: none;
}

#treenav {
        margin: 10px;
        text-align: left;
}

#treenav ul li {
        margin: 1px 0;
        padding: 0;
        font-size: 11px;
}

#treenav ul.expanded {
        display: block;
}

#treenav ul.expanded,#treenav ul.collapsed {
        margin: 5px 10px;
}

#treenav ul.collapsed {
        display: none;
}

.expanded li,.collapsed li{
        border-bottom: 1px dashed #CCCCCC;
        width: 100px;
}

.listhead {
        font-weight: bold;
        display: block;
        font-size: 12px;
        color: #333333;
        background: #F1F1F1;
        padding: 3px;
        width: 120px;
        margin: 1px 0;
}

#treenav a {
        text-decoration: none;
        color: #666666;
}

#treenav a:hover {
        color: #990000;
}

JS代码

element = document.getElementById(id);

element.className = (element.className.toLowerCase() == 'expanded'?'collapsed':'expanded');

}

onload = function() {

toggleMenu('submenuid');

}