protected void HiddenField1_ValueChanged(object sender, EventArgs e)
        {
            string[]      list   = HiddenField1.Value.Split(',');
            List <string> places = new List <string>();

            for (int i = 0; i < list.Length; ++i)
            {
                if (list[i] == "true")
                {
                    places.Add((i + 1).ToString());
                }
            }
            MySQLServer.add_order(Request.Cookies["login"].Value, session_id, places);
            Response.Redirect("~/Account/Profile");
        }