Emily: try playing around with the amount of space the image takes on the screen. I've noticed that if there is a scroll bar @the bottom, the arrow keys tend to not work. In that case, if I reduce the image size (say from original to large), they work fine. On my monitors, the
background image for Dan's gallery does not fit (it's just a bit too big). In this case, when I hit the arrow key, it both moves the scroll bar, and moves to the next image. If I reduce the window size so that the image (e.g., 139967706) no longer fits in the window, only the scroll bar responds to the arrow keys, even when the scroll bar reaches the right side. In other galleries, Dan uses a different background, and the arrow keys work (e.g.
http://www.pbase.com/danpolley/image/146307321), unless I make the window smaller than the image being displayed.
For me, it doesn't make any difference whether comments are inline or by link - just the size of the image and/or background image relative to the window.
Win7-64,FF 15.01
cheers
nancy