public static void ShowHelp(string key, UnosTipa originator)
        {
            HelpViewer hh = new HelpViewer(key, originator);

            hh.Show();
        }
        public static void ShowHelp(string key, IzborEtiketa originator)
        {
            HelpViewer hh = new HelpViewer(key, originator);

            hh.Show();
        }
        public static void ShowHelp(string key, MainWindow originator)
        {
            HelpViewer hh = new HelpViewer(key, originator);

            hh.Show();
        }