tab二级导航菜单问题

要求能从数据库中循环调用,鼠标放到(或点击)一级菜单 在其下方显示二级菜单
主要代码如下

下面是从数据库中循环调用一级菜单的代码
<ul>
<%set rsRoot=server.createobject("adodb.recordset")
sql="select * From MenuClass where Depth=0 and ShowOnTop=True order by

RootID"
rsRoot.open sql,conn,1,1
do while not rsRoot.eof
ParentID=rsroot("classID")%>
<li><a href="<%=rsroot("linkurl")%>"><%=rsroot("Classname")%></a></li>
<%RSROOT.MOVENEXT
LOOP
RSROOT=NOTHING
RSROOT.CLOSE%>
</ul>

下面是从数据库中循环调用二级菜单的代码
<ul>
<%set rsRoot1=server.createobject("adodb.recordset")
sql1="select * From MenuClass where Depth=1 and ShowOnTop=True and

ParentID="& ParentID &" order by RootID"
rsRoot1.open sql1,conn,1,1
do while not rsRoot1.eof%>
<li><a href="<%=rsroot1("linkurl")%>"><%=rsroot1("Classname")%></a></li>
<%RSROOT1.MOVENEXT
LOOP
RSROOT1=NOTHING
RSROOT1.CLOSE%>
</ul>
<head>
<style type="text/css">
<!--
#header {
background-color: #F8F4EF;
height: 200px;
width: 400px;
margin: 0px;
padding: 0px;
border: 1px solid #ECE1D5;
font-family: "宋体";
font-size: 12px;
}
#menu {
margin: 0px;
padding: 0px;
list-style-type: none;
}
#menu li {
display: block;
width: 100px;
text-align: center;
float: left;
margin: 0px;
padding-top: 0.2em;
padding-right: 0px;
padding-bottom: 0.2em;
padding-left: 0px;
cursor: hand;
}
.sec1 { background-color: #FFFFCC;}
.sec2 { background-color: #00CCFF;}
.block { display: block;}
.unblock { display: none;}
-->
</style>
</head>
<body>
<script language=javascript>
function secBoard(n)
{
for(i=0;i<menu.childNodes.length;i++)
menu.childNodes[i].className="sec1";
menu.childNodes[n].className="sec2";

for(i=0;i<main.childNodes.length;i++)
main.childNodes[i].style.display="none";
main.childNodes[n].style.display="block";

}
</script>
<div id="header">
<ul id="menu">
<li onMouseOver="secBoard(0)" class="sec2">最新新闻</li>
<li onMouseOver="secBoard(1)" class="sec1">最新文章</li>
<li onMouseOver="secBoard(2)" class="sec1">最新日志</li>
<li onMouseOver="secBoard(3)" class="sec1">论坛新帖</li>
</ul>

<ul id="main">
<li class="block">第一个内容</li>
<li class="unblock">第二个内容</li>
<li class="unblock">第三个内容</li>
<li class="unblock">第四个内容</li>
</ul>

</div>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style type="text/css">
<!--
#header {
background-color: #F8F4EF;
height: 200px;
width: 400px;
margin: 0px;
padding: 0px;
border: 1px solid #ECE1D5;
font-family: "宋体";
font-size: 12px;
}
#menu {
margin: 0px;
padding: 0px;
list-style-type: none;
}
#menu li {
display: block;
width: 100px;
text-align: center;
float: left;
margin: 0px;
padding-top: 0.2em;
padding-right: 0px;
padding-bottom: 0.2em;
padding-left: 0px;
cursor: hand;
}
.sec1 { background-color: #FFFFCC;}
.sec2 { background-color: #00CCFF;}
.block { display: block;}
.unblock { display: none;}
-->
</style>
</head>
<body>
<script language=javascript>
function secBoard(n)
{
for(i=0;i<menu.childNodes.length;i++)
menu.childNodes[i].className="sec1";
menu.childNodes[n].className="sec2";

for(i=0;i<main.childNodes.length;i++)
main.childNodes[i].style.display="none";
main.childNodes[n].style.display="block";

}
</script>
<div id="header">
<ul id="menu">
<li onMouseOver="secBoard(0)" class="sec2">最新新闻</li>
<li onMouseOver="secBoard(1)" class="sec1">最新文章</li>
<li onMouseOver="secBoard(2)" class="sec1">最新日志</li>
<li onMouseOver="secBoard(3)" class="sec1">论坛新帖</li>
</ul>

<ul id="main">
<li class="block">第一个内容</li>
<li class="unblock">第二个内容</li>
<li class="unblock">第三个内容</li>
<li class="unblock">第四个内容</li>
</ul>

</div>
</body>
</html>
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