<iframe frameborder="0" src="http://www.daixiao360.cn/" 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>