[przemoc]

I don't like the comparison, because IE6 wasn't really ahead of its competition, yet WebKit simply gives you possibility to play with new APIs and not-yet-finished "standards", without waiting for them to become official standards (and already existing implementation helps to improve/fix them before getting final version).

I haven't checked that this is the case (i.e. whether making it work in Fx would be huge burden or even impossible), possibly not. Anyway, just saying.

[Gmo]

IE6 introduced XmlHttpRequest, just one of the things where it was ahead of its competition.

[przemoc]

It was IE5 AFAIR.

EDIT: And to be precise, XMLHttpRequest is Mozilla's naming that came later (after Microsoft's interface name: IXMLHTTPRequest). So you meant: ActiveXObject("Microsoft.XMLHTTP")