code: public static String getOperatingSystem(final WebBrowser webBrowser) {
  		synchronized (USER_AGENT_ANALYZER) {
  			final UserAgent userAgent = USER_AGENT_ANALYZER.parse(webBrowser.getBrowserApplication());
  			return userAgent.getValue(UserAgent.DEVICE_CLASS) + "." +userAgent.getValue(UserAgent.OPERATING_SYSTEM_NAME) +"." + userAgent.getValue(UserAgent.OPERATING_SYSTEM_VERSION);			
  		}
  	}
docs: Gets the operating system.
  
  @param webBrowser
  the web browser
  @return the operating system