elm_naviframe_item_pop_cb_set(nf_main_item, back_cb, app_data);
evas_object_smart_callback_add(genlist, "realized", _item_realized, NULL);
elm_naviframe_item_pop_cb_set(nf_main_item, back_cb, app_data);
evas_object_smart_callback_add(genlist, "realized", _item_realized, NULL);