public function reset()
{
$this->_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : "";
$this->_browser_name = self::BROWSER_UNKNOWN;
$this->_browser_key = self::BROWSER_UNKNOWN;
$this->_version = self::VERSION_UNKNOWN;
$this->_platform = self::PLATFORM_UNKNOWN;
$this->_os = self::OPERATING_SYSTEM_UNKNOWN;
$this->_is_aol = false;
$this->_is_mobile = false;
$this->_is_tablet = false;
$this->_is_robot = false;
$this->_is_facebook = false;
$this->_aol_version = self::VERSION_UNKNOWN;
}