public static GetSet<Integer> getSetIndex(final JComboBox combobox) {
		return new GetSet<Integer>(
				new F0<Integer>() {public Integer e() {
					return combobox.getSelectedIndex();
				}},
				new P1<Integer>() {public void e(Integer obj) {
					combobox.setSelectedIndex(obj);
				}}
				);
	}