public void refreshList () {
		if ((rosterTableModel == null) || (MainWindow.rosterDB == null))
			return;
		rosterTable.removeAll();
		for (Roster r: MainWindow.rosterDB.getRosters()) {
			rosterTable.add( r);
	    }
		rosterTable.changeSelection(0, 0, false, false);
		rosterTableModel.fireTableDataChanged();
	}