please update embedded js in gallery exporter
It looks like nobody has touched the embedded lightbox2 since it was added to DT 3 years ago, which makes me kindof nervous. Unfortunately (I guess?) the new lightbox has changed dependencies to jquery from scriptaculous+prototype.
I don't know what other changes might be needed to update to newer lightbox.
I saw also an old ticket about switching to galleria.io, with a pull request; that would be another direction to go.