def detect_firefox_o_s_tablet()

      if (detect_ios() || detect_android() || detect_sailfish())
        return false
      end

      if ((user_agent.include?(ENGINE_FIREFOX)) && (user_agent.include?(DEVICE_TABLET)))
        return true
      end

      return false
    end
def detect_firefox_o_s_tablet()

      if (detect_ios() || detect_android() || detect_sailfish())
        return false
      end

      if ((user_agent.include?(ENGINE_FIREFOX)) && (user_agent.include?(DEVICE_TABLET)))
        return true
      end

      return false
    end
=begin
*
     * Detects a tablet (probably) running the Firefox OS.
     * @return detection of a Firefox OS tablet

=end