Browsers
However, in all probability it could be a problem with your browser! Check out whether you have the latest version, but the most popular are:

Mozilla Firefox - currently version 1
Opera - currently version 8
Internet Explorer currently version 6 (avoid using if possible due to potential security problems)

Using this site ~ Viewing images
Many of the images can be expanded by clicking on the required image. Once the new window opens you don't need to close it, as clicking on a new image will update the window contents.