Prevent user to open the page by clicking back and forward button of the browser

please take a logout page and paste the following code in load event.
protected void Page_Load(object sender, EventArgs e)
       {
           try
           {
               FormsAuthentication.SignOut();
               Session.RemoveAll();
               Session.Abandon();


               //Added By Amin Uddin
               //Used To Protect Back button
               Response.Buffer = true;
               Response.ExpiresAbsolute = DateTime.Now.AddDays(-15);
               Response.Expires = -1500;
               Response.CacheControl = "no-cache";
               Response.Cache.SetNoStore();

               System.Web.HttpCookie cook = Request.Cookies.Get(Common.CommonCookie.cookName.userCook.ToString());
               cook.Expires.AddMilliseconds(1);

               string[] cookies = Request.Cookies.AllKeys;
               foreach (string cookie in cookies)
               {
                   Response.Cookies[cookie].Expires = DateTime.Now.AddDays(-1);
               }


           }
           catch  {
               FormsAuthentication.RedirectToLoginPage();

           }
           finally
           {
               FormsAuthentication.RedirectToLoginPage();
           }
       }

<script language="javascript" type="text/javascript">

      window.history.forward(1);

  </script>
  <script language="javascript" type="text/javascript">
      function disableBackButton() {
          window.history.forward();
      }
      setTimeout("disableBackButton()", 0);
  </script>