Mozilla offers a number of features to improve the viewing of images. These include:
Popup blocking (According to recent polls, popups are the #1 Internet annoyance).
Block images (block images from third-party sites, block images for selected sites, block images in email).
Control looping (repeating over and over) of animated images.
Resize images to fit the screen.
Further, by right clicking on an image, you can save an image as a file, send it as an email attachment, and perform other useful functions.