comboOperators.addActionListener(this);
comboOperators.setActionCommand("operatorSelected");
// create the list
list = new DcFilterEntryList();
list.addMouseListener(this);
JScrollPane scroller = new JScrollPane(list);
scroller.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scroller.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);