public ActionResult EditComment(Comment comment)
 {
     if (functions.CookieID() == null)
     {
         return(Redirect("/Users/Login"));
     }
     else if (ModelState.IsValid)
     {
         commentDao.Edit(comment);
         return(Json(true, JsonRequestBehavior.AllowGet));
     }
     return(Json(false, JsonRequestBehavior.AllowGet));
 }