I've installed it and all I can say is that it works wonderfully (vB 3.7.2).
One suggestion however, in the Crosslink admin section, you can change the background color and font color for the popup. But the border is still blue by default. I had to change
var ol_bgcolor="#FFCC66"; in overlib_vbglossar.js to do so. Maybe a good workaround would be to make font color and ol_bgcolor equal
Anyway, thank you for your work and keep it up !