[quote author=jimmy-law link=topic=137.msg6219#msg6219 date=1273857876]
really great effort by Fu-Kwun Hwang can i get updates on that
[/quote]
Do you mean that you need the source code? It is available as attached file under the first message.

You are welcomed to check out EJS verasion of [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=387.0]Reaction time measurement[/url]