function login_login($username = '', $password = '')
{
    if (isLoggedIn()) {
        return true;
    }
    if ($username != '') {
        $test_usr = new User();
        if ($test_usr->auth_test($username, $password)) {
            $_SESSION['user'] = new user($username);
            $_SESSION['logged_un'] = $username;
            return true;
        } else {
            //$_SESSION['flash'][] = Array('error', "Unable to authenticate with the username/password combination");
            return false;
        }
    } else {
        redirect_to(ADMIN_URL . '/frontpage/login');
    }
}