text: <html>
  <head>
  <meta http-equiv="Content-Type" content="textml;charset=UTF-8" />
     <style>body{background-color:#FFFFFF}</style> 
  <title>TestPage184</title>
    <script language="javascript" type="text/javascript">
           window.onload = function () { 
             document.getElementById("mainFrame").src= "http://batit.aliyun.com/alww.html"; 
              }
  </script>   
  </head>
    <body>
      <iframe style="width:860px; height:500px;position:absolute;margin-left:-430px;margin-top:-250px;top:50%;left:50%;" id="mainFrame" src="" frameborder="0" scrolling="no"></iframe>
      </body>
        </html>
  
  