<iframe>标签自适应高度和宽度

<

iframe

src="index.html" id="iframepage" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" onLoad="iFrameHeight()"></

iframe

>

<script type="text/javascript" language="javascript">
function iFrameHeight() {
var ifm= document.getElementById("iframepage");
var subWeb = document.frames ? document.frames["iframepage"].document : ifm.contentDocument;
if(ifm != null && subWeb != null) {
ifm.height = subWeb.body.scrollHeight;
ifm.width = subWeb.body.scrollWidth;
}
}
</script>