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

@-moz-document
  domain("tv.so-net.ne.jp"), 
  domain("tv.so-net.ne.jp.nyud.net")
{
  #ad-balloon-container,
  div.commonHeader,
  div[class^='header'], 
  iframe,
  div.super-banner,
  div.contBlockST,
  div.genreContList
    { display:none !important; }
}