@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("nk.pl") {

  #billboard_place,
  #blog_promo_link,
  #content_banner,
  #floating_adbox,
  #last_events_box,
  #last_photos_box_ajax,
  #last_added_videos,
  #partners_box,
  #rectangle_box,
  #rectangle_place,
  .ad_placement,
  .generic_ad_wrapper,
  .partners_box,
  .promoted_accounts,
  .quick_window_ads,
  .reklama,
  .main_column_right > center{
    display:none !important;
  }

  body, #home {
   background: #87C03A url("http://nk.pl/img/bg2") repeat-x scroll 0 0 !important;
  }
}