代码<iframe id="frame_content" width="100%" src="xxx.html" scrolling="no" frameborder="0" onload="this.height=1549"></iframe>
<script type="text/javascript">
function reinitIframe(){
var iframe = document.getElementById("frame_content");
try{
var bHeight = iframe.contentWindow.document.body.scrollHeight;
var dHeight = iframe.contentWindow.document.documentElement.scrollHeight;
var height = Math.max(bHeight, dHeight);
iframe.height = height;
}catch (ex){}
}
window.setInterval("reinitIframe()", 200);
</script>


代码<iframe id="frame_content" src="iframe_b.html" scrolling="no" frameborder="0" onload="this.height=this.contentWindow.document.documentElement.scrollHeight"></iframe>