As the description says. I have been using the extension called Image zoom for years, and it works as advertised. But in the last few days, when I make an image bigger than the height of the screen, it starts to chop the top of the image off, while allowing me to scroll down on the image that has gone below the screen. The top of the image is lost without the ability to scroll back up to see it. After this started happening, I tried numerous extensions, all with the same luck, which leads me to believe it is a problem with firefox. Its like it is centering the image on the screen instead of keeping the top of the image at the top of the screen as it gets bigger. Is this a glitch with a newer version of firefox, or is there a setting I accidentally changed?