You're welcome... I also replied in the Parkinson's thread on same topic:
http://neurotalk.psychcentral.com/thread66812.html
It's a pleasure providing the NeuroTalk forums to the world and I enjoy doing it. I also couldn't do it without a strong and helpful membership -- you! -- and the community support and welcome teams, who spend a lot of time here making sure everything is running smoothly and spam-free!
DocJohn