setIconImage(new ImageIcon(iconUrl).getImage());
setSize(640, 480);
setExtendedState(JFrame.MAXIMIZED_BOTH);
setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
pagePreview.addMouseWheelListener(new MouseWheelZoomListener(pagePreview));
JMenuBar menuBar = new JMenuBar();
JMenu menuFile = new JMenu();
menuFile.setText(GettextResource.gettext(Configuration.getInstance().getI18nResourceBundle(), "File"));
menuFile.setMnemonic(KeyEvent.VK_F);