Hello,
Just as Dan Kegel likes to announce on the list, how Wine gets mentioned out on the internet, I thought this may be interesting/motivating to you.
This page, http://ejohn.org/blog/accuracy-of-javascript-time/, mentions (big) problems in testing javascript performances (there's some interest in that in the new race between webbrowsers), when running IE (and other browsers) on Windows, which are fixed when running it under Wine (in this case on a Mac)
Regards,
Joris