public ActionResult Login(string returnUrl)
        {
            ViewBag.ReturnUrl = returnUrl;

            if (returnUrl != null)
            {
                string[] url = returnUrl.Split('/');

                for (int i = 0; i < url.Length; i++)
                {
                    if (url[i].ToLower() == "ref")
                    {
                        CustomerBiz cb = new CustomerBiz();
                        Customer customer = cb.GetCustomer(url[i + 1].ToLower());

                        ViewBag.id = customer.id;
                        ViewBag.logo = customer.logo;
                        ViewBag.nombre = customer.nombre;
                        break;
                    }
                }
            }
            else
            {
                CustomerBiz cb = new CustomerBiz();
                Customer customer = cb.GetCustomer("orkidea");

                ViewBag.id = customer.id;
                ViewBag.logo = customer.logo;
                ViewBag.nombre = customer.nombre;
            }

            return View();
        }