代码简介：
这款形式的菜单对于站长来说再熟悉不过了，说不定我们每天都会见到它，而且也在使用它，我们都知道后台左侧的Js菜单，一般都是可多级展开的，就像这款菜单一样，简洁美观，如果你是一位网站程序开发者的话，完全可以可以用这款菜单作为你的后台管理控制菜单。
代码内容：
<html>
<head>
<titile>Flash效果的网站后台左侧Js多级展开菜单代码_网页代码站(www.webdm.cn)</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type=text/css>
body { background:#799AE1; margin:0px; font:normal 12px 宋体; }
table { border:0px; }
td { font:normal 12px; }
img { vertical-align:bottom; border:0px; }
a { font:normal 12px 宋体; color:#215DC6; text-decoration:none; }
a:hover { color:#428EFF }
.sec_menu { border-left:1px solid white; border-right:1px solid white; border-bottom:1px solid white;
overflow:hidden; background:#D6DFF7; }
.menu_title { }
.menu_title span { position:relative; top:2px; left:8px; color:#215DC6; font-weight:bold; }
.menu_title2 { }
.menu_title2 span { position:relative; top:2px; left:8px; color:#428EFF; font-weight:bold; }
</style>
<script language=javascript>
function menuShow(obj,maxh,obj2)
{
if(obj.style.pixelHeight<maxh)
{
obj.style.pixelHeight+=maxh/20;
obj.filters.alpha.opacity+=5;
obj2.background="";
if(obj.style.pixelHeight==maxh/10)
obj.style.display='block';
myObj=obj;
myMaxh=maxh;
myObj2=obj2;
setTimeout('menuShow(myObj,myMaxh,myObj2)','5');
}
}
function menuHide(obj,maxh,obj2)
{
if(obj.style.pixelHeight>0)
{
if(obj.style.pixelHeight==maxh/20)
obj.style.display='none';
obj.style.pixelHeight-=maxh/20;
obj.filters.alpha.opacity-=5;
obj2.background="";
myObj=obj;
myMaxh=maxh
myObj2=obj2;
setTimeout('menuHide(myObj,myMaxh,myObj2)','5');
}
else
if(whichContinue)
whichContinue.click();
}
function menuChange(obj,maxh,obj2)
{
if(obj.style.pixelHeight)
{
menuHide(obj,maxh,obj2);
whichOpen='';
whichcontinue='';
}
else
if(whichOpen)
{
whichContinue=obj2;
whichOpen.click();
}
else
{
menuShow(obj,maxh,obj2);
whichOpen=obj2;
whichContinue='';
}
}
</script>
<base target=main>
</head>
<body onselectstart="return false;" ondragstart="return false;" oncontextmenu="return false;">
<table cellpadding=0 cellspacing=0 width=142 align=center>
<tr style="cursor:hand;">
<td height=25 class=menu_title onmouseover=this.className='menu_title2';
onmouseout=this.className='menu_title'; id=menuTitle1 onclick="menuChange(menu1,80,menuTitle1);">
<span>系统选项</span>
</td>
</tr>
<tr>
<td>
<div class=sec_menu style="158px;height:80px;filter:alpha(Opacity=100);overflow:hidden;" id=menu1>
<table cellpadding=0 cellspacing=0 align=center width=135 style="position:relative;top:10px;">
<tr>
<td height=20>
<a href=/ onfocus=this.blur();><img src=http://www.webdm.cn/images/20090920/dots.gif>
安全选项</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://codefans.net onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
垃圾邮件选项</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
动态规则选项</a>
</td>
</tr>
</table>
</div>
</td>
</tr>
</table>
<script language=javascript>
var whichOpen=menuTitle1;
var whichContinue='';
</script>
<table cellpadding=0 cellspacing=0 width=158 align=center>
<tr style="cursor:hand;">
<td height=25 class=menu_title onmouseover=this.className='menu_title2';
onmouseout=this.className='menu_title'; id=menuTitle2 onclick="menuChange(menu2,120,menuTitle2);">
<span>系统规则</span>
</td>
</tr>
<tr>
<td>
<div class=sec_menu style="158;height:0;filter:alpha(Opacity=0);display:none;" id=menu2>
<table cellpadding=0 cellspacing=0 align=center width=135 style="position:relative;top:10px;">
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
IP过滤规则</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
信封过滤规则</a>
</td>
</tr>
</table>
</div>
</td>
</tr>
</table>
<table cellpadding=0 cellspacing=0 width=158 align=center>
<tr style="cursor:hand;">
<td height=25 class=menu_title onmouseover=this.className='menu_title2';
onmouseout=this.className='menu_title'; id=menuTitle3 onclick="menuChange(menu3,120,menuTitle3);">
<span>系统管理</span>
</td>
</tr>
<tr>
<td>
<div class=sec_menu style="158;height:0;filter:alpha(Opacity=0);display:none;" id=menu3>
<table cellpadding=0 cellspacing=0 align=center width=135 style="position:relative;top:10px;">
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
用户管理</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
进程管理</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
主机状态</a>
</td>
</tr>
</table>
</div>
</td>
</tr>
</table>
<table cellpadding=0 cellspacing=0 width=158 align=center>
<tr style="cursor:hand;">
<td height=25 class=menu_title onmouseover=this.className='menu_title2';
onmouseout=this.className='menu_title'; id=menuTitle4 onclick="menuChange(menu4,140,menuTitle4);">
<span>系统统计</span>
</td>
</tr>
<tr>
<td>
<div class=sec_menu style="158;height:0;filter:alpha(Opacity=0);display:none;" id=menu4>
<table cellpadding=0 cellspacing=0 align=center width=135 style="position:relative;top:10px;">
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
信头过滤统计</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
信体过滤统计</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
附件过滤统计</a>
</td>
</tr>
<tr>
<td height=20>
<a href=http://webdm.cn onfocus=this.blur();><img
src=http://www.webdm.cn/images/20090920/dots.gif>
动态规则统计</a>
</td>
</tr>
</table>
</div>
</td>
</tr>
</table>
<table cellpadding=0 cellspacing=0 width=158 align=center>
<tr style="cursor:hand;">
<td height=25 class=menu_title onmouseover=this.className='menu_title2';
onmouseout=this.className='menu_title';>
<span>退出系统</span>
</td>
</tr>
</table>
</body>
</html>
<br>
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！</p>
代码来自：http://www.webdm.cn/webcode/c43b98aa-baa0-4213-ada3-e979b4fdf84a.html