Adds a scroll to top or bottom button.
Scroll to Top Button allows you to quickly jump back to the top of any page! Once you scroll far enough down on a page, the button will appear in the top right corner. Click it, and you will be taken to the very top in no time!
Great for when viewing long/infinite pages such as Facebook, Twitter, etc.
* Button(s) wouldn't hide in fullscreen mode.
Bug reported by Сергей Кателина.
Opera & Yandex.Browser version of Scroll To Top Button is available at https://addons.opera.com/extensions/details/scroll-to-top-button/