Other browsers cannot read the v:imagedata element. So, later in the same source file, you can see that there is a regular IMG tag, pointing to the image file in the main Screenbook folder. This file has been resized. That is, it has been shrunken, with an inevitable loss of some information or detail. Browsers other than Internet Explorer ignore the v:imagedata element and read the IMG element, so when viewing a Screenbook in a browser other than Internet Explorer, you're actually looking at the shrunken image.

In Firefox and other browsers, the shrunken image shows with a link allowing users to pop up the full sized image. This is only for the case of images that are larger than 640 pixels.