pref_panel_window = create_window(size + 2, 30, 10, 10);
pref_panel = new_panel(pref_panel_window);
pref_panel_visible = 0;
hide_panel(pref_panel);
pref_panel_window = create_window(size + 2, 30, 10, 10);
pref_panel = new_panel(pref_panel_window);
pref_panel_visible = 0;
hide_panel(pref_panel);