iframe自适应高度

<iframe src="/proInfo.do?method=sitList" id="ifr" onload="iframeFitHeight(this)"  frameborder="0" width="100%" scrolling="no" ></iframe>
<script>

	function iframeFitHeight(oIframe) 
	{//Iframe窗口自适应高度 兼容IE6.0 FF2.0以上 
    try 
    { 
        var oWin = oIframe.name ? window.frames[oIframe.name] : oIframe.contentWindow;  
        oIframe.style.height = oWin.document.body.scrollHeight + "px"; 
    } 
    catch(e){} 
	} 
</script>