});
conversationTable.setDefaultRenderer(Date.class, new DateRenderer());
_conversationSorter = new TableSorter(_tableModel, conversationTable.getTableHeader());
conversationTable.setModel(_conversationSorter);
_diffPanel = new DiffPanel();
compareSplitPane.setBottomComponent(_diffPanel);
baseComboBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Object o = baseComboBox.getSelectedItem();