@Override 
	public void setValueAt (Object val, int row, int column) {
		if ((column < 2) || (column > 2+ MainWindow.setupData.getEventLength ()))
			return;
		MainWindow.rosterDB.getRosters().get(row).setAvailability (MainWindow.setupData.getDateAt(column-2), val);
		fireTableDataChanged();
	}