iframe高度自适应的设置

<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;
}
}
</script>

<iframe name="iframepage"
src="<%=basePath%>any/xxgl/news_find_index.action" frameborder="0"
id="iframepage"  width="100%" onload="iFrameHeight()">
</iframe>