returning a view with ajax

Hi,

I have this problem: I have an ajax call to a controller like this:

            $('.flagsdiv').click(function () {
                var id = $(this).attr('id');
                console.log(id);
                var flag = document.getElementById('callus');
                var lang = id;
                var url = '/Home/SetCulture' + '?id=' + lang;
                flag.src = "../images/" + lang + ".gif";
                console.log(url);
                $.ajax({
                    type: "GET",
                    url: url,
                    data: {},
                    dataType: "text"
                });
                document.getElementById("contbox").style.display = "none";
            });

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The controller action is like this:

        public ActionResult SetCulture(string id)
        {
            string culture = id;
            culture = CultureHelper.GetImplementedCulture(culture);
            RouteData.Values["culture"] = culture;

            // Save culture in a cookie
            HttpCookie cookie = Request.Cookies["_culture"];
            if (cookie != null)
                cookie.Value = culture;   // update cookie value
            else
            {

                cookie = new HttpCookie("_culture");
                cookie.Value = culture;
                cookie.Expires = DateTime.Now.AddYears(1);
            }
            Response.Cookies.Add(cookie);

            return RedirectToAction("Index", "Home");
        }

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This executes this code in the controller

        public ActionResult Index()
        {
            ViewBag.Message = "Welcome to Rt solutions!";
            string culture = CultureHelper.GetCurrentCulture().Substring(0, 2);
            ViewBag.Lang = "../images/" + culture + ".gif";

            return View();
        }

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but the Index view is not returned as it should.

What can be the problem?

Best regards
RTSOL