Since the Proposed EcmaScript 4 document came out, Microsoft and others are trying to push trough their standards.
If you are interested in this. Read this open letter from the CTO of Mozilla to the Lead Architect for Internet Explorer.
I find it all somehow a little amusing. War over code !
How long will it take before some frustrated developer picks up a stick and beats an Ms employee to death?
A short entertaining overview of ES 4.0 you find here