Currently selecting the TOC navigation triggers a "backwards" transition regardless of whether the selection is before or after the present one. Perhaps this method of the node-ids could be compared to present the appropriate direction. I don't know enough javascript to suggest the best way, but this could perhaps help. http://stackoverflow.com/questions/6832596/how-to-compare-software-version-number-using-js-only-number.
Currently selecting the TOC navigation triggers a "backwards" transition regardless of whether the selection is before or after the present one. Perhaps this method of the node-ids could be compared to present the appropriate direction. I don't know enough javascript to suggest the best way, but this could perhaps help. http://stackoverflow.com/questions/6832596/how-to-compare-software-version-number-using-js-only-number.
(A minor suggestion for some future version...)