functionPreview(){varTestWin=open('');TestWin.document.write(code.value);}<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http:/
由于编辑器会自动运行JS所以代码直接贴出来了
<!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=gb2312" />
<title>弹出层:不随滚动条滚动的层</title>
<style type="text/css">
<!--
html,body {height:100%; margin:0px; font-size:12px;}
.mydiv {
background-color: #FFCC66;
border: 1px solid #f00;
text-align: center;
line-height: 26px;
font-size: 12px;
font-weight: bold;
z-index:999;
width: 300px;
height: 120px;
left:50%;
top:50%;
margin-left:-150px!important;/*FF IE7 该值为本身宽的一半 */
margin-top:-60px!important;/*FF IE7 该值为本身高的一半*/
margin-top:0px;
position:fixed!important;/* FF IE7*/
position:absolute;/*ie6*/
_top: expression(eval(document.compatMode &&
document.compatMode=='CSS1Compat') ?
documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*ie6*/
document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);/*IE5 IE5.5*/
}
.bg,.popIframe {
background-color: #666; display:none;
width: 100%;
height: 100%;
left:0;
top:0;/*FF IE7*/
filter:alpha(opacity=50);/*IE*/
opacity:0.5;/*FF*/
z-index:1;
position:fixed!important;/*FF IE7*/
position:absolute;/*ie6*/
_top: expression(eval(document.compatMode &&
document.compatMode=='CSS1Compat') ?
documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*ie6*/
document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);
}
.popIframe {
filter:alpha(opacity=0);/*IE*/
opacity:0;/*FF*/
}
-->
</style>
<script language="javascript" type="text/javascript">
function showDiv(){
document.getElementById('popDiv').style.display='block';
document.getElementById('popIframe').style.display='block';
document.getElementById('bg').style.display='block';
}
function closeDiv(){
document.getElementById('popDiv').style.display='none';
document.getElementById('bg').style.display='none';
document.getElementById('popIframe').style.display='none';
}
</script>
</head>
<body>
<div id="popDiv" class="mydiv" style="display:none;">浮动层<br />
可以用来浮动在任何HTML对象的上方，在现代Web设计中，浮动层是一种非常有效的UI概念，可以用来/着重显示你的产品/显示警示信息。 提示用户输入。 </div>
<div id="bg" class="bg" style="display:none;"></div>
<a href="javascript:showDiv()">点击这里弹出层</a>
<iframe id='popIframe' class='popIframe' frameborder='0' ></iframe>
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</body>
</html>