menu_set_update_func(submenu, desk_menu_update);
menu_set_execute_func(submenu, desk_menu_execute);
menu_set_destroy_func(submenu, desk_menu_destroy);
menu_set_update_func(submenu, desk_menu_update);
menu_set_execute_func(submenu, desk_menu_execute);
menu_set_destroy_func(submenu, desk_menu_destroy);