text: <html class="reftest-wait">
    <head>
      <script type="text/javascript">
        window.onload = function() {
  
          // Get the frame
          var frame = document.getElementById("testframe");
  
          // Set margin* attributes
          frame.marginWidth = "30px";
          frame.marginHeight = "20px";
  
          // Trigger the reftest snapshot
          document.documentElement.className = '';
        }
      </script>
    </head>
    <body>
      <iframe id="testframe" src="653930-1-iframe.html">
    </body>
  </html>
  