| IE版本 | 是否支持 |
|---|---|
| IE5.5 | 否 |
| IE6 | 是 |
| IE7 | 是 |
| IE8 | 是 |
<title>Untitled Page</title>
</head>
<body>
<form>
<select style="top: 100px; left: 100px; width: 300px;">
<option>asdf</option>
<option>asdf</option>
</select>
<div style="position: absolute; top: 0px; left: 0px; width: 1000px; height: 1000px;
background-color: Blue;">
<iframe src="" frameborder="0" style="position:relative; top:0px; left:0px; width:100%; height:100%; z-index:-1;filter:alpha(opacity=0)"></iframe>
</div>
</form>
</body>
</html>