Using Firefox,SeaMonkey & Opera, I've been using this website http://www.picturemosaics.com/tools/crop/index.php to crop my pictures before posting them in here or otherwise. It works fine on my XP, but NOT on my W7. I have the same addons on both pc's on FF only. It works fine in Opera, but not Firefox or SeaMonkey on my W7. I hope I've not confused this too much. Click the link above, click the browse button,browse to picture,click on picture, click upload, click crop image & that should bring up a box below the one you clicked saying Step 1), click it, you should then be able to crop it to any size & click apply crop & so forth. ALL browsers are up to date as are the addons.