====== Web Browser User Agent ======
  * 단계적 폐지 예정
  * http://useragentstring.com/
  * [[http://www.zytrax.com/tech/web/mobile_ids.html|Mobile Browser User Agents]]
  * iOS 5 iPhone : ''Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3''
  * iOS 5 iPad : ''Mozilla/5.0 (iPad; CPU OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3''
  * Mobile Android Firefox : ''"Mozilla/5.0 (Android; Mobile; rv:14.0) Gecko/14.0 Firefox/14.0.1"''