iframe自适应高度js

 1 <iframe src="http://www.fufuok.com/"  ></iframe>Javascript代码： 
 2 <script type="text/javascript" language="javascript"> 
 3 function iFrameHeight() { 
 4 var ifm= document.getElementById("iframepage"); 
 5 var subWeb = document.frames ? document.frames["iframepage"].document : ifm.contentDocument; 
 6 if(ifm != null && subWeb != null) { 
 7 ifm.height = subWeb.body.scrollHeight; 
 8 } 
 9 } 
10 </script>