代码简介：
向上展开的半透明菜单，展开菜单后是可以看到背景的哦，透明度自己设置一下，风格有点类似XP系统的右键菜单一样，链接颜色什么的你需要自己修改一下，以适合你的网页风格。
代码内容：
<HTML>
<HEAD>
<title>Js向上展开半透明菜单代码_网页代码站(www.webdm.cn)</title>
<STYLE>
body{
background:url(http://www.webdm.cn/images/20090919/bgdemo3.jpg);
}
.menuover {
BORDER-RIGHT: #1a71e6 1px solid; BORDER-TOP: #1a71e6 1px solid; BORDER-LEFT: #1a71e6 1px solid; CURSOR: hand; BORDER-BOTTOM: #1a71e6 1px solid;
BACKGROUND-COLOR: #eaf2fd
}
.menuout {
CURSOR: hand
}
TD {
FONT-SIZE: 12px; COLOR: #1a71e6;TEXT-DECORATION: none
}
A {
FONT-SIZE: 12px; COLOR: #1a71e6; ‘TEXT-DECORATION: none
}
</STYLE>
<SCRIPT>
var moveStep = 15; // 移动单位
var moveTime = 10; //移动时间
function MoveMenuBox()
{
if(MenuBox.doing)
{
clearInterval(MenuBox.doing)
}
moveStep *= -1
MenuBox.doing = setInterval("DoMoveAction()",moveTime)
}
function DoMoveAction()
{
var judger = MenuBox.style.pixelTop + moveStep;
if(moveStep>0)
{
if(judger <= MenuBox.parentElement.offsetHeight)
{
MenuBox.style.pixelTop = judger
}
else
{
MenuBox.style.pixelTop = MenuBox.parentElement.offsetHeight;
clearInterval(MenuBox.doing);
MenuBox.doing = false;
}
}
else
{
if(judger >= 0)
{
MenuBox.style.pixelTop = judger
}
else
{
MenuBox.style.pixelTop = 0;
clearInterval(MenuBox.doing);
MenuBox.doing = false;
}
}
}
</SCRIPT>
</HEAD>
<BODY>
<TABLE cellSpacing=0 cellPadding=0 border=0>
<TBODY>
<TR>
<TD width="100%">
<DIV style="OVERFLOW: hidden; WIDTH: 100%; HEIGHT: 100%">
<TABLE id=MenuBox
style="BORDER-RIGHT: #1a71e6 1px solid; BORDER-TOP: #1a71e6 1px solid; VISIBILITY: hidden; BORDER-LEFT: #1a71e6 20px solid; BORDER-BOTTOM:
#1a71e6 1px solid; POSITION: relative"
cellSpacing=4 cellPadding=0 width=130>
<TBODY>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>关于我们</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>广告服务</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>用户留言</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>下载排行</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>最新更新</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>网页特效</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>源码下载</TD></TR>
<TR>
<TD class=menuout onmouseover="this.className='menuover';"
onmouseout="this.className='menuout';" vAlign=center align=middle
height=20>网页代码站</TD></TR></TBODY></TABLE></DIV></TD></TR>
<TR>
<TD width="100%">
<TABLE id=judgerBox height=29 cellSpacing=0 cellPadding=0 width=130>
<TBODY>
<TR>
<TD style="FONT-SIZE: 6px" vAlign=center align=middle width=128
bgColor=#ffffff height=4></TD></TR>
<TR>
<TD
style="BORDER-RIGHT: #ffffff 1px outset; BORDER-TOP: #ffffff 1px outset; BORDER-LEFT: #ffffff 1px outset; CURSOR: hand; COLOR:
#ffffff; BORDER-BOTTOM: #ffffff 1px outset; BACKGROUND-COLOR: #1a71e6"
onclick=MoveMenuBox() vAlign=center align=middle width=128
height=25>打开菜单</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
<SCRIPT>
function window.onload()
{
MenuBox.style.pixelTop = MenuBox.parentElement.offsetHeight;
MenuBox.style.visibility = "visible"
}
</SCRIPT>
<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/7bd9ac64-22ba-4c2f-8901-3c0c0bb3a11a.html