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

/* ランキングのカレンダーを消す */
@-moz-document url-prefix("http://www.nicovideo.jp/ranking/"),
               url-prefix("http://nine.nicovideo.jp/ranking/") {
  .content_312 > .mb8p4:first-child > .controller_bg > table ~ * {
    display : none !important
  }
}

/* ランキングで各動画の項目にマウスを乗せた再表示される「動画を宣伝」、「ランキング推移」のメニューを消す */
/*
@-moz-document url-prefix("http://www.nicovideo.jp/ranking/"),
               url-prefix("http://nine.nicovideo.jp/ranking/")  {
  .menu_palet {
    display : none !important
  }
}
*/

/* ニコニコ動画のヘッダに表示される「プレミアム登録へ」を消す */
/*
@-moz-document domain("www.nicovideo.jp") {
  #PAGEHEADER > .bg_headmenu:first-child > .headmenu_width:first-child > .headmenu:first-child + .headmenu > tbody > tr:only-child > td:first-child > a[href="#"]:first-child + a {
    display : none !important;
  }

  #PAGEHEADER > .bg_headmenu:first-child > .headmenu_width:first-child > .headmenu:first-child + .headmenu > tbody > tr:only-child > td:first-child {
    font-size : 0 !important;
  }

  #PAGEHEADER > .bg_headmenu:first-child > .headmenu_width:first-child > .headmenu:first-child + .headmenu > tbody > tr:only-child > td:first-child > * {
    font-size : 12px !important;
  }

  #PAGEHEADER > .bg_headmenu:first-child > .headmenu_width:first-child > .headmenu:first-child + .headmenu > tbody > tr:only-child > td:first-child > a[href="https://secure.nicovideo.jp/secure/login_form"] {
    padding-left : 8px !important;
  }
}
*/