static public function displayBox($text = '', $config = null)
    {

        if (!isset ($config ['attach'])) {
            $config ['attach'] = true;
        }

        if ($text == '') {
            $text = self::$standardErrorText;
        }

        $retVal = '<p style="margin: 0.2em; font-size: 1.5em; color: #000000;">' . $text . '<p>';

        if ($config ['attach'] && !empty (self::$additionalErrorText)) {
            $retVal .= '<p style="margin: 0.2em; color: black;">' . self::$additionalErrorText . '</p>';
        }

        $retVal = "<div style='font-size: 0.8em; margin: 10px auto; width: 60ex; text-align: center; border: 1px solid #000; padding: 1em; font-family: Tahoma; background-color: #FFFFA7;'>" . $retVal . "</div>";

        return $retVal;

    }