<!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>
<meta http-equiv="Content-Type" content="text/html"; charset="utf-8" />
<title>LIGHTBOX EXAMPLE</title>
<style>
* {
margin:0;
padding:0
}
html, body {
height: 100%;
width: 100%;
font-size:12px
}
.white_content {
display: none;
position: absolute;
top: 25%;
left: 25%;
width: 50%;
padding: 6px 16px;
border: 12px solid #D6E9F1;
background-color: white;
z-index:1002;
overflow: auto;
}
.black_overlay {
display: none;
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color:#f5f5f5;
z-index:1001;
-moz-opacity: 0.8;
opacity:.80;
filter: alpha(opacity=80);
}
.close {
float:right;
clear:both;
width:100%;
text-align:right;
margin:0 0 6px 0
}
.close a {
color:#333;
text-decoration:none;
font-size:14px;
font-weight:700
}
.con {
text-indent:1.5pc;
line-height:21px
}
</style>
<script>
function show(tag){
var light=document.getElementById(tag);
var fade=document.getElementById('fade');
light.style.display='block';
fade.style.display='block';
}
function hide(tag){
var light=document.getElementById(tag);
var fade=document.getElementById('fade');
light.style.display='none';
fade.style.display='none';
}
</script>
</head>
<body>
<a href="javascript:void(0)" οnclick="show('light')">打开1</a>
<a href="javascript:void(0)" οnclick="show('light2')">打开2</a>
<div id="light" class="white_content">
<div class="close"><a href="javascript:void(0)" οnclick="hide('light')"> 关闭</a></div>
<div class="con">
内容1 内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容内容
</div>
</div>
<div id="light2" class="white_content">
<div class="close"><a href="javascript:void(0)" οnclick="hide('light2')"> 关闭</a></div>
<div class="con">
内容2
</div>
</div>
<div id="fade" class="black_overlay"></div>
</body>
</html>
代码全在上面了，可以复制试试...弹出层的大小可以设置，也可以比例化