Hi bobrova,

This is an English only forum I'm afraid so we can only provide help in English. You can use http://forum.mozilla-russia.org/ for questions in Russian.

Привет Боброва,

Это только в английском форуме Боюсь, что так мы можем только оказать помощь на английском языке. Вы можете использовать http://forum.mozilla-russia.org/ для вопросов на русском языке.

Support to disable "Tabs on Top" has been removed from Firefox 29 and later and toggling the browser.tabs.onTop pref to false on the about:config page is no longer possible.

You can look at the "Tab on Bottom" extension instead.

• Tabs On Bottom: https://addons.mozilla.org/firefox/addon/tabs-on-bottom/

See also:

• https://support.mozilla.org/kb/common-questions-after-updating-to-new-firefox

• https://support.mozilla.org/kb/learn-more-about-the-design-of-new-firefox
• https://support.mozilla.org/kb/how-to-make-new-firefox-look-like-old-firefox