标签：
就是相关控件的显示（展开）
opacity是透明度的设置
<!DOCTYPE html>
<html>
<head>
<meta charset="gb2312">
<meta name="author" content="http://www.softwhy.com/" />
<title>蚂蚁部落</title>
<style type="text/css">
#fade {
display:none;
position:absolute;
top:0%;
left:0%;
width:100%;
height:100%;
background-color:black;
z-index:1001;
-moz-opacity:0.8;
opacity:.80;
filter:alpha(opacity=80);
}
#light{
display:none;
position:absolute;
top:25%;
left:25%;
width:50%;
height:50%;
padding:16px;
border:3px solid orange;
background-color:#3333cc;
z-index:1002;
overflow:auto;
}
</style>
<script type="text/javascript">
window.onload=function(){
var linkbt=document.getElementById("linkbt");
var light=document.getElementById(‘light‘);
var fade=document.getElementById(‘fade‘);
var closebt=document.getElementById("closebt");
linkbt.onclick=function(){
light.style.display=‘block‘;
fade.style.display=‘block‘;
}
closebt.onclick=function(){
light.style.display=‘none‘;
fade.style.display=‘none‘;
}
}
</script>
</head>
<body>
<a href="javascript:void(0)" id="linkbt"> 点击这里打开窗口</a>
<div id="light"><a href="javascript:void(0)" id="closebt">关闭窗口</a></div>
<div id="fade""></div>
</body>
</html>
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原文地址：http://www.cnblogs.com/souroot/p/4296863.html
