public void startGUI() {
                /* Set the Nimbus look and feel */
                //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
                 * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
                 */
                try {
                        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                                if ("Nimbus".equals(info.getName())) {
                                        javax.swing.UIManager.setLookAndFeel(info.getClassName());
                                        break;
                                }
                        }
                } catch (ClassNotFoundException ex) {
                        java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
                } catch (InstantiationException ex) {
                        java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
                } catch (IllegalAccessException ex) {
                        java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
                } catch (javax.swing.UnsupportedLookAndFeelException ex) {
                        java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
                }
                //</editor-fold>

                /* Create and display the form */
                java.awt.EventQueue.invokeLater(new Runnable() {
                        public void run() {
                                getMf().setVisible(true);
                        }
                });
        }