Hey Mags,

Post #16 mentions the server could be infected.
Post #16 also mentions the function is coming from this address - [Only registered and activated users can see links. ]
Which I believe is where it's coming from, why is that function being allowed from a GPSPower domain/link?

Whatever it is, it only happens on this site and blocking Javascript on this site stops it instantly when it's happening (not happening today though).
When it's happening, unblock Javascript and it immediately starts appearing again.