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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js+CSS彈出居中的背景半透明div層</title>
<style type="text/css">
body{margin:0px;}
#bg{width:100%;height:100%;top:0px;left:0px;position:absolute;filter: Alpha(opacity=50);opacity:0.5; background:#000000; display:none;}
#popbox{position:absolute;width:400px; height:400px; left:50%; top:50%; margin:-200px 0 0 -200px; display:none; background:#666666;}
</style>
<script type="text/javascript">
function pupopen(){
document.getElementById("bg").style.display="block";
document.getElementById("popbox").style.display="block" ;
}
function pupclose(){
document.getElementById("bg").style.display="none";
document.getElementById("popbox").style.display="none" ;
}
</script>
</head>
<body>
</br>
CSS彈出層，或者說是彈出窗口，背景半透明風(fēng)格的彈出框，</br>在網(wǎng)站登錄、用戶注冊、公告提示方面都非常適合使用。</br>IE和FF,OP均可以~彈出窗口,背景半透明 </br>
原理:兩個(gè)層,一個(gè)高度和寬度都是100%,另一個(gè)就是你要彈出的窗口的具體內(nèi)容,</br>半透明在IE中是用filter: Alpha(opacity=60);在非IE中用opacity:0.60;
</br></br> <a href="#" onclick="pupopen()">點(diǎn)擊這里打開窗口</a>
<div id="bg"></div>
<div id="popbox">兩個(gè)層,一個(gè)高度和寬度都是100%,另一個(gè)就是你要彈出的窗口的具體內(nèi)容,半透明在IE中是用filter: Alpha(opacity=60);在非IE中用opacity:0.60;
<br>
<br>
<br>
<a href="#" onclick="pupclose()">點(diǎn)擊關(guān)閉窗口</a>
</div>
</body>
</html>
