Well, I don't really think you can 'copyright' script, so I would never sue for someone using that.
Verbim, I am not saying he is not compentent. All I know is I never saw those passover popups ANYWHERE before I wrote my code. After I wrote it, a couple other fansites had it in about 3 or 4 weeks (this is well over a year ago; at the end of 2003), then Allakhazam's had it - they had something else before my code was made public. And if he IS a compentent JavaScript coder, then he knows how to view someone else's source and copy it. Ask him how he wrote it
, I would not say he got it from wow.warcraftstrategy.com, but if he got it from one of the other sites, tell him you know who wrote the original code. I can even show him how to add context linking to it.