public function Login()
	{
		$user = new ExampleUser();
		
		if ($user->Login(RequestUtil::Get('username'), RequestUtil::Get('password')))
		{
			// login success
			$this->SetCurrentUser($user);
			$this->Redirect('SecureExample.UserPage');
		}
		else
		{
			// login failed
			$this->Redirect('SecureExample.LoginForm','Unknown username/password combination');
		}
	}