iframe高度自适应

<iframe src="index.html" id="iframepage" frameborder="0" scrolling="no"

marginheight="0" marginwidth="0" onLoad="iFrameHeight()"></iframe>

 

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;

}  

}