MS-centric? Well maybe it's because other browsers do not offer this type of functionality yet. Where would we be if Netscape didn't come up with its "proprietary" Javascript language?

I recently completed an intranet solution in which IE Javascript played an essential role in the final solution. Won't go in the specifics, but some of IE's functionality helps in the web vs. software battle.

Are you arguing that all software should be rewritten as web applications these days since they are not accessible and not conformant to W3C specs? This is madness since things just can't be done yet with the limited standards we have.

If the standards have what you require, don't use any of the innovative extensions MS or other browser makers have to offer. But don't be surprised if others are using these to help meet their customer's needs better.