I don't know if I'd trust a page that is supposed to be a Javascript resource, when it itself contains erroneous Javascript:

Error: unterminated character class 
Source File: http://msdn.microsoft.com/workshop/code/browdata.js
Line: 26, Column: 31
Source Code:
    else if (this.userAgent.match(/Mozilla[/].*(95[/]NT|95|NT|98|3.1).
+*Opera.*(\d+)\.(\d+)/))
[download]

;^D