public ActionResult PartialIndex(string startBtn, string dir, string Period)
        {
            if (Period == "Slow")
            {
                ViewBag.Delay = 8000;
            }
            else
            {
                ViewBag.Delay = 3000;
            }
            ViewParameters viewParams = Session["ViewParams"] as ViewParameters;
            List <int>     indexesSel = new List <int>();

            for (int i = 0; i < viewParams.Words.Length; i++)
            {
                if (viewParams.Words[i] == '1')
                {
                    indexesSel.Add(i);
                }
            }
            Phrase phrase = Verbs.GetRandomVerb(indexesSel).GetRandomPhrase();

            if (dir == "EnRu")
            {
                return(PartialView("EnRuAudio", phrase));
            }
            else if (dir == "RuEn")
            {
                return(PartialView("RuEnAudio", phrase));
            }
            else
            {
                return(PartialView("EnAudio", phrase));
            }
        }