IFRAME

   <iframe src="health.jsp" frameborder="0" width="1000" scrolling="no" height="100%"  id="myframe"></iframe>
           <script type="text/javascript">
            function reinitIframe()
            {
            var iframe = document.getElementById("myframe");
            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>

<iframe name="nfrm" src="about:blank"></iframe>
<a href="http://www.baidu.com" target="nfrm">在框架中显示百度</a> 

<iframe name="nfrm" id="nfrm" src="about:blank"></iframe>
<a onmouseover="javascript:document.getElementById('nfrm').src='http://www.baidu.com'" target="nfrm">鼠标移过时显示百度</a>