private void refresh() {
		ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
	    try {
			ec.redirect(((HttpServletRequest) ec.getRequest()).getRequestURI());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void reserveBook(int id, boolean reserved) {
		System.out.println(id + " " + reserved);
		libraryManager.setBookReservation(id, reserved);
		refresh();
	}