Moodle Subject Dock 2.1
Well, there have been a few hiccups, but plenty of complements. MoodleDan aka Dan Humoherson has gone back and tidy a few lines of code that may have affected lightbox. V2.1, works as expected and can be downloaded here:
http://vl3.co.uk/DockV2.1.zip. Thank you for all the kind tweets / forum posts.