public void selectTBond(int i) {
		if (i >= 0) {
			selectedComponent = model.getTBond(i);
		}
		else {
			selectedComponent = null;
			viewer.setHighlightTBondVisible(false);
			for (int k = 0; k < model.getTBondCount(); k++)
				viewer.setTBondSelected(k, false);
		}
	}