经反复实现，如下代码可实现：
<html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>iframe全屏测试</title>
<mce:style><!--
body { margin: 0px; }
iframe {border: 0px;}
--></mce:style><style mce_bogus="1">body { margin: 0px; }
iframe {border: 0px;}</style>
</head>
<mce:script type="text/javascript"><!--
function resize(){
document.getElementById('frame3d').style.height = document.body.clientHeight - 84+"px";
}
window.onresize = resize;
// --></mce:script>
<body scroll="no">
<img border="0" width="100%" height="84" src="./images/logo.png" mce_src="images/logo.png">
<iframe id="frame3d" name="frame3d" frameborder="0" width="100%" scrolling="auto"
style="margin-top: -4px;" onload="this.style.height=document.body.clientHeight-84"
height="100%" src="./map.jsp" mce_src="map.jsp"></iframe>
</body>
</html>
1、页面加载实现：iframe的onload事件，之所以减去84，是logo图片的高度，把这个位置给让出来。
2、全屏实现：window.onresize事件
document.getElementById('frame3d').style.height = document.body.clientHeight - 84+"px";
