ScrollUP buttons. Fast scrolling on any site

I think many habrazhiteli began to feel discomfort because of the absence of the scroll up button on sites.
For me it became as necessary as a stable access to the Internet.
The list of extensions I found under the cat.

So, straight to the point. Extensions add a button to the toolbar , or optionally to the page:
Firefox : ScrollUp
Opera : Up! Button (there is a neighbor , but this one also scrolls down)
Chrome : ScrollUp (second click, you can return to its original place)
Thanks tema_gad for Scroll To Top . It is open source and prettier, but unfortunately catches scrolling of only the first frame. So on sites like gmail does not work .

At the request of inattentive readers: Home , Ctrl-Home .
It has several disadvantages.

• When you enter information (focus in the input field) loses its functionality.
• When you enter the address loses its functionality
• There is no way to return to the place of reading, after watching the top.

If someone knows extensions for other browsers, I’m happy to add.