我是利用jquery实现，看看是否符合你的要求
<script src="../lib/jquery.js" type="text/javascript"></script>
<script src="../jquery.treeview.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("#tree").treeview()
$("input[name='ids']").click(function(){
var checkedValue = this.checked
$(this).parent("li").find("input[name='ids']").attr("checked",checkedValue)
})
})
</script>
<ul id='tree'>
<li>
<input type='checkbox' name='ids' id="test"/>
<span class='folder'>test1</span>
<ul>
<li>
<input type='checkbox' name='ids' />
<span class='folder'>test11</span>
</li>
</ul>
<ul>
<li>
<input type='checkbox' name='ids' />
<span class='folder'>test12</span>
<ul>
<li>
<input type='checkbox' name='ids' />
<span class='folder'>test121</span>
</li>
</ul>
</li>
</ul>
</li>
</ul>
父<input type="checkbox" onclick="selectAll(this)"/>
子
<input type="checkbox"/>
<input type="checkbox"/>
<input type="checkbox"/>
function selectAll(checkbox) {
$('input[type=checkbox]').attr('checked', $(checkbox).attr('checked'))
}
这个简单，我写了段代码，你copy过去看下是不是你要的效果！望采纳！！<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
<title>制作树形菜单</title>
<style type="text/css">
div{/*隐藏层*/
display:none
}
a {/*文字链接的背影样式*/
font-size:13px
color: #ffffff
text-decoration: none
background-color:#669933
width:100px
line-height:25px
text-align:center
display: block
border-right:1px solid #ffffff
border-bottom:1px solid #ffffff
}
a:hover {
/*鼠标在文字链接上时的文字背景样式*/
font-size:13px
color: #ffffff
background-color:#ee9d01
width:100px
text-align:center
display: block
}
</style>
<script type="text/javascript">
function show(d){
document.getElementById(d).style.display='block' //显示层
}
function hide(d){
document.getElementById(d).style.display='none' //隐藏层
}
</script>
</head>
<body>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td><a href="#" onmousemove="show(1)" onmouseout="hide(1)">手机数码</a></td>
<td><a href="#" onmousemove="show(2)" onmouseout="hide(2)">淘宝集市</a></td>
<td><a href="#" onmousemove="show(3)" onmouseout="hide(3)">品牌商城</a></td>
</tr>
<tr>
<td>
<div id="1" >
<a href="#">手机数码1</a>
<a href="#">手机数码2</a>
<a href="#">手机数码3</a>
</div>
</td>
<td>
<div id="2" >
<a href="#">淘宝集市1</a>
<a href="#">淘宝集市2</a>
<a href="#">淘宝集市3</a>
</div>
</td>
<td>
<div id="3" >
<a href="#">品牌商城1</a>
<a href="#">品牌商城2</a>
<a href="#">品牌商城3</a>
</div>
</td>
</tr>
</table>
</body>
</html>
