BorderLayout layout = new BorderLayout();
layout.setEnableState(false);
container.setLayout(layout);
mailListPanel = new MailListPanel();
container.add(mailListPanel, new BorderLayoutData(LayoutRegion.CENTER));
mailItemPanel = new MailItemPanel();
BorderLayoutData southData = new BorderLayoutData(LayoutRegion.SOUTH, .5f, 200, 1000);
southData.setSplit(true);