Skips an image

[archivalGrysbok]

It's not really noticeable in the 61-image demo, but I'm using 8 images and it's pretty obvious.

Example:
https://archives.library.wcsu.edu/relatedObjects/demos/threesixtyjs-demo/index1.html

I think it has to do with the images being 0-indexed, but I'm really not sure. I also know this is probably not a project that gets much attention--this is mostly a signpost in case anyone else sees the same problem and wonders if they're doing something wrong.