back.setEnabled(true); next.setEnabled(false);
back.setEnabled(false); next.setEnabled(true);
			public void actionPerformed(ActionEvent e) {				model.setFolder(newCurrentFolder);				String fileName = newCurrentFolder.getAbsolutePath();				adrZone.setText(					fileName						+ ((fileName.endsWith(File.separator))							? ""							: File.separator));				back.setEnabled(true);				next.setEnabled(false);			}