gtk_box_pack_start (GTK_BOX(bottom_hbox), show_old_chkbtn, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT(show_old_chkbtn), "toggled",
gtk_box_pack_start (GTK_BOX(bottom_hbox), show_old_chkbtn, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT(show_old_chkbtn), "toggled",