.getStructureSelectionManager();
ssm.addCommandListener(((AlignFrame) getTopFrame()).getViewport());
ssm.addCommandListener(((AlignFrame) getBottomFrame()).getViewport());
.getStructureSelectionManager();
ssm.addCommandListener(((AlignFrame) getTopFrame()).getViewport());
ssm.addCommandListener(((AlignFrame) getBottomFrame()).getViewport());