public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
				switch (jmolContainer.getAtomSelection()) {
				case JmolContainer.SELECT_NUCLEIC_ALL:
					ModelerUtilities.setWithoutNotifyingListeners(miNucleicAll, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_BACKBONE:
					ModelerUtilities.setWithoutNotifyingListeners(miNucleicBackbone, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_BASE:
					ModelerUtilities.setWithoutNotifyingListeners(miNucleicBase, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_ADENINE:
					ModelerUtilities.setWithoutNotifyingListeners(miAdenine, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_CYTOSINE:
					ModelerUtilities.setWithoutNotifyingListeners(miCytosine, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_GUANINE:
					ModelerUtilities.setWithoutNotifyingListeners(miGuanine, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_THYMINE:
					ModelerUtilities.setWithoutNotifyingListeners(miThymine, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_URACIL:
					ModelerUtilities.setWithoutNotifyingListeners(miUracil, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_AT:
					ModelerUtilities.setWithoutNotifyingListeners(miAT, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_CG:
					ModelerUtilities.setWithoutNotifyingListeners(miCG, true);
					break;
				case JmolContainer.SELECT_NUCLEIC_AU:
					ModelerUtilities.setWithoutNotifyingListeners(miAU, true);
					break;
				}
			}