From: Anne van Kesteren [mailto:ann...@annevk.nl]
> I think the problem is that nobody has yet tried to figure out what invariants > that would break and how we could solve them. I'm not too worried about > the parser as it already has script synchronization, but cloneNode(), ranges, > and editing, do seem problematic. If there is a clear processing model, > Mozilla might be fine with running JavaScript during those operations. Even if it can be specced/implemented, should it? I.e., why would this be OK where MutationEvents are not?