This article gives a very good overview as to where the “Browser Wars” of 2009 stand as of today.

http://news.cnet.com/8301-17939_109-10200329-2.html

“All Microsoft’s browser rivals are scrambling to speed up JavaScript, trying to get ahead as the Web expands into a foundation for programs.”

This is information from CNET: The source for computers and technology http://www.cnet.com