public function setPage($number) {

		$number = (int)$number;
		
		$this->page = $number;

		// the cookie about persistent state
		$cookieName = Application::getCookiePrefix() . ucfirst($this->module) . ucfirst($this->action);
		
		// set the persistent state
		setcookie($cookieName, $number, NULL, '/');
		
	}