code: private void showErrorPage(HttpServletResponse resp, String message) throws IOException {
  		resp.setStatus(HttpServletResponse.SC_OK);
  		resp.setContentType(GUIServletStub.CONTENT_TYPE_HTML);
  
  		PrintWriter writer = resp.getWriter();
  
  		writer
  			.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n        \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">");
  		writer.println("<html>");
  		writer.println("<head>");
  		writer.println("  <title>Launch Job - Error</title>");
  		writer.println("  <meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\" />");
  		writer.println("  <link rel=\"stylesheet\" type=\"text/css\" href=\"css/nephelefrontend.css\" />");
  		writer.println("</head>");
  
  		writer.println("<body>");
  		writer.println("  <div class=\"mainHeading\">");
  		writer
  			.println("    <h1><img src=\"img/StratosphereLogo.png\" width=\"326\" height=\"100\" alt=\"Stratosphere Logo\" align=\"middle\"/>Nephele and PACTs Query Interface</h1>");
  		writer.println("  </div>");
  		writer.println("  <div style=\"margin-top: 50px; text-align: center;\">");
  		writer.println("    <p class=\"error_text\" style=\"font-size: 18px;\">");
  		writer.println(message);
  		writer.println("    </p><br/><br/>");
  		writer.println("    <form action=\"launch.html\" method=\"GET\">");
  		writer.println("      <input type=\"submit\" value=\"back\">");
  		writer.println("    </form>");
  		writer.println("  </div>");
  		writer.println("</body>");
  		writer.println("</html>");
  	}
docs: Prints the error page, containing the given message.
  
  @param resp
  The response handler.
  @param message
  The message to display.
  @throws IOException
  Thrown, if the error page could not be printed due to an I/O problem.