public ActionResult BookIt(int id, string name, string isbn, string grade)
		{
			var book = new Book
			{
				Name = name,
				Library = Session.Load<Library>(id),
				//Attributes =
				//    {
				//        ISBN = isbn,
				//        Grade = grade
				//    }
			};

			Session.Save(book);

			return Json(new { Status = "Done" }, JsonRequestBehavior.AllowGet);
		}
		public ActionResult Acquire(int id, string bookName)
		{
			var book = new Book
			{
				Name = bookName,
				Library = Session.Load<Library>(id),
			};
			Session.Save(book);

			return Json(new { BookId = book.Id }, JsonRequestBehavior.AllowGet);
		}