Div+CSS实现始终居中的半透明弹出层

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<htmlxmlns="http://www.w3.org/1999/xhtml">

<head>

<metahttp-equiv="Content-Type"content="text/html;charset=gb2312"/>

<title>Div+CSS实现始终居中的半透明弹出层</title>

<styletype="text/css">

<!--

html,body{height:100%;margin:0px;font-size:12px;}

.mydiv{

background-color:#FFCC66;

border:1pxsolid#f00;

text-align:center;

line-height:40px;

font-size:12px;

font-weight:bold;

z-index:999;

width:300px;

height:120px;

left:50%;

top:50%;

margin-left:-150px!important;/*FFIE7该值为本身宽的一半*/

margin-top:-60px!important;/*FFIE7该值为本身高的一半*/

margin-top:0px;

position:fixed!important;/*FFIE7*/

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);/*IE5IE5.5*/

}

.bg,.popIframe{

background-color:#666;display:none;

width:100%;

height:100%;

left:0;

top:0;/*FFIE7*/

filter:alpha(opacity=50);/*IE*/

opacity:0.5;/*FF*/

z-index:1;

position:fixed!important;/*FFIE7*/

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>

<scriptlanguage="javascript"type="text/javascript">

functionshowDiv(){

document.getElementById('popDiv').style.display='block';

document.getElementById('popIframe').style.display='block';

document.getElementById('bg').style.display='block';

}

functioncloseDiv(){

document.getElementById('popDiv').style.display='none';

document.getElementById('bg').style.display='none';

document.getElementById('popIframe').style.display='none';

}

</script>

</head>

<body>

<divid="popDiv"class="mydiv"style="display:none;">烈火学院欢迎你!请记住我们的网址:http://www.veryhuo.com

<br><ahref="javascript:closeDiv()">关闭窗口</a></div>

<divid="bg"class="bg"style="display:none;"></div>

<ahref="javascript:showDiv()">点击这里弹出层</a>

<iframeid='popIframe'class='popIframe'frameborder='0'></iframe>

</body>

</html><br/><center>如不能显示效果,请按Ctrl+F5刷新本页,更多网页代码:<ahref='http://www.veryhuo.com/'target='_blank'>http://www.veryhuo.com/</a></center>

相关推荐