public function renewRememberMe() {
		
		// build the cookie name
		$cookieName = static::getRememberMeCookieName();
		
		// check if cookie exists
		if (!isset($_COOKIE[$cookieName])) {
			return FALSE;
		}
		
		// expire in 30 days
		$expire = time() + 60*60*24*30;
		
		// set cookie and return the result
		return setcookie($cookieName, $_COOKIE[$cookieName], $expire, '/');
		
	}