<html>
<head>
<title>Missing GWT Browser Plugin</title>
</head>
<body>
<h1>No GWT Browser Plugin Detected</h1>
GWT Development Mode needs a browser plugin to operate.  Please <a
  href="http://gwt-dev-plugin-missing.appspot.com/">install</a> the
appropriate one for your browser.
</body>
</html>