Google Quick Scroll and image centering for Firefox 4

Question

Mozilla Firefox

In Chrome, I had two wonderful plugins - one immediately placed to the words searched for in Google when opening the page: img169.imageshack.us/img169/3892/61986204.gif

The second, when opening the image, placed it in the center.

Are there such plugins for fox? Or at least scripts for a monkey?

Answer 1

userstyles.org/styles/13805/center-images-horizontally-and-vertically

Answer 2

addons.mozilla.org/en/firefox/addon/googleenhancer/