static void
action_forward_callback (GtkAction *action,
                         gpointer user_data)
{
    nautilus_window_back_or_forward (NAUTILUS_WINDOW (user_data),
                                     FALSE, 0, nautilus_event_get_window_open_flags ());
}
static void
activate_back_or_forward_menu_item (GtkMenuItem *menu_item, 
				    NautilusWindow *window,
				    gboolean back)
{
	int index;
	
	g_assert (GTK_IS_MENU_ITEM (menu_item));

	index = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menu_item), "user_data"));

	nautilus_window_back_or_forward (window, back, index, should_open_in_new_tab ());
}