public static function flash($message, $label = 'default')
    {
        if (!isset($_SESSION)) {
            throw new AtomikException('The session must be started before using Atomik::flash()');
        }
        
        Atomik::fireEvent('Atomik::Flash', array(&$message, &$label));
        
        if (!Atomik::has("session.__FLASH.$label")) {
            Atomik::set("session.__FLASH.$label", array());
        }
        Atomik::add("session.__FLASH.$label", $message);
    }