/** Dispose of the form */
 @Override
 protected void dispose() {
   u_panel.dispose();
   r_panel.dispose();
   cap_panel.dispose();
   c_panel.dispose();
   super.dispose();
 }
 /** Dispose of the panel */
 public void dispose() {
   role_pnl.dispose();
   cap_pnl.dispose();
   removeAll();
 }