Hmmmm....
Using an example similar to the one I posted above, I just did tests with both IE 5.5 and Mozilla 1.3a, and all the images were printed, exactly as they were displayed in the browser.
Another method would be to use ALT-Print Screen to copy the active window to the clipboard, and then paste the image into an image editing application such as IrfanView, Paint Shop Pro, or Photoshop, and printing from that application.
If neither of those works for you, try setting z:index: 0 for all the images, or just leaving out that attribute.
