Hiding/showing images quickly under Firefox.

Hi, Previously I was an Opera-fan and about one year ago I changed completely to Firefox 1.0.x. There is only one function I miss a lot, to have the easy possibility to turn off/on pictures on webpages. Under Opera there was a button to show all/cached/none images; in Firefox the only way I know to achieve the same goes via "Tools -> Options -> Web features -> Load images"... Is there please a way to place an icon on the interface of Firefox for this function, like it was in Opera, or alternatively is there e.g. an extension doing similar job?! Please note the most recent Firefox version I use is 1.0.8 ... Thanks so much, Pelibali