<!DOCTYPE>
<html class="reftest-wait">
  <style>
    input:invalid {
      display: none;
    }
  </style>
  <script>
    function onloadHandler()
    {
      document.getElementById('e').setCustomValidity('foo');
      document.documentElement.className='';
    }
  </script>
  <body onload="onloadHandler();">
    <form>
      <input id='e'>
      <input type='submit'>
    </form>
  </body>
</html>