iframe name="mainframe" id="mainframe" src="" onload="this.height =document.frames['mainframe'].document.body.scrollHeight" border="0" marginheight="0" marginwidth="0" frameborder="0" scrolling="no" width="732"></iframe>这种方法只能在ie上面有用，在firefox中并不支持，因此我做了一个兼容IE和FireFox的iframe 自动高度脚本和大家分享！
<html>
<head>
<title>兼容IE和FireFox的iframe 自动高度脚本</title>
<link href="/zbh/css/style.css" rel="stylesheet" type="text/css" />
<link rel="Shortcut Icon" href="/share/pic/logo.ico">
<link rel="Bookmark" href="/share/pic/logo.ico">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<script>
var FFextraHeight = 0;
if(window.navigator.userAgent.indexOf("Firefox")>=1)
{
FFextraHeight = 16;
}
function ReSizeiFrame(iframe)
{
if(iframe && !window.opera)
{
iframe.style.display = "block";
if(iframe.contentDocument && iframe.contentDocument.body.offsetHeight)
{
iframe.height = iframe.contentDocument.body.offsetHeight + FFextraHeight;
}
else if (iframe.Document && iframe.Document.body.scrollHeight)
{
iframe.height = iframe.Document.body.scrollHeight;
alert(iframe.Document.body.scrollHeight);
}
}
}
</script>
<iframe name="mainframe" id="mainframe" src="/share/aa.html" onload="ReSizeiFrame(this)" border="0" marginheight="0" marginwidth="0" frameborder="0" scrolling="no" width="732"></iframe>
</body>
</html>