菜单的实现原理
本来要用GWT实现一个菜单，最后还是逃不开要理解一下CSS和HTML。
看了下面代码应该就能明白其中原理了。
[java]
<html>
<head>
<title>Menu example</title>
<style>
*{
padding:0px;
margin:0px;
border:0px;
}
.menuBarPanel{
border:5px solid red;
width:99%;
}
.menuPanel{
width:250px;
height:200px;
border:5px solid black;
background:white;
display:none;
}
.farRight{
position:absolute;
right:1%;
z-index:2;
}
.contentPanel{
width:99%;
border:5px solid blue;
background:yellow;
position:absolute;
}
</style>
<script>
function show(){
document.getElementById('menu').style.display='block';
}
function hide(){
document.getElementById('menu').style.display='none';
}
</script>
</head>
<body>
<div id="menuBar" class="menuBarPanel">
<table style="width:100%;">
<colgroup>
<col style="width:50%;">
<col style="width:50%;">
</colgroup>
<tr>
<td></td>
<!--How to locate the buttons on the far right.-->
<td style="text-align:right;">
<div>
<input type="button" value="Hide" onClick="javascript:hide();"/>
<input type="button" value="Show" onClick="javascript:show();"/>
</div>
</td>
</tr>
<tr>
<td></td>
<td>
<!--How to locate the menu on the far right.-->
<div class="farRight">
<div id="menu" class="menuPanel">Some options here!</div>
</div>
</td>
</tr>
</table>
</div> www.zzzyk.com
<div id="content" class="contentPanel">
<p>A</p>
<p>B</p>
<p>C</p>
<p>D</p>
<p>E</p>
</div>
</body>
</html>
补充：软件开发 , Java ,
