<html>
<head>
<title>JavaScript-Test</title>
<script type="application/javascript;version=1.8">

 function start()
  {
   try {
    window.openid.getPreferredOpenidProvider(function(preferredOpenidProvider) {
          var p = document.getElementById("id");
          p.textContent = preferredOpenidProvider;
        });
   } catch(e) {
    alert("exception="+e);
   }
  }

</script>
</head>
<body>
<form>
<input type=button value="Start" onClick="start()">
</form>
<p id="id">openid</p>
</body>
</html>