void Update()
    {
        if (openCloseKey != KeyCode.None && Input.GetKeyDown(openCloseKey))
        {
            if (pBook.GetBookState() == PBook.BookState.CLOSED)
            {
                pBook.OpenBook();
            }
            if (pBook.GetBookState() == PBook.BookState.OPEN)
            {
                pBook.CloseBook();
            }
        }

        if (nextPageKey != KeyCode.None && Input.GetKeyDown(nextPageKey))
        {
            pBook.NextPage();
        }

        if (prevPageKey != KeyCode.None && Input.GetKeyDown(prevPageKey))
        {
            pBook.PrevPage();
        }

        if (gotoLastPageKey != KeyCode.None && Input.GetKeyDown(gotoLastPageKey))
        {
            pBook.GoToLastPage(gotoSpeed);
        }

        if (gotoFirstPageKey != KeyCode.None && Input.GetKeyDown(gotoFirstPageKey))
        {
            pBook.GoToFirstPage(gotoSpeed);
        }

        if (jumpToLastPageKey != KeyCode.None && Input.GetKeyDown(jumpToLastPageKey))
        {
            pBook.JumpToLastPage(playSoundOnJump);
        }

        if (gotoFirstPageKey != KeyCode.None && Input.GetKeyDown(jumpToFirstPageKey))
        {
            pBook.JumpToFirstPage(playSoundOnJump);
        }
    }
 public void GoToLastPage()
 {
     pBook.GoToLastPage(50);
 }