iframe框架调用高度自适应方法

iframe框架调用自适应高度方法:
<iframe frameborder="0" src="http://www.78moban.com/" class="iframe" frameborder="0" id="test" onload="this.height=100" width="762px"  scrolling="no"></iframe>  
<script type="text/javascript">  
function reinitIframe(){  
var iframe = document.getElementById("test");  
try{  
var bHeight = iframe.contentWindow.document.body.scrollHeight;  
var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;  
var height = Math.max(bHeight, dHeight);  
iframe.height = height;  
console.log(height);  
}catch (ex){}  
}  
window.setInterval("reinitIframe()", 200);  
</script>