hi!
just an observation:
I have downloaded your updated (standard) source code from the main site: (1.2 since 2007, july 12.). but with this, the tabbars are not scrollable again.
I looked after it, and i have found out, that you have forget to include the updated .css file into the your updated source code, so it contains the old .css, which is not including the solution for scrollability.
Andrew