Jose, I am equally impressed by, and frightened by, the solution to get this working in Chrome etc :-)
I tried out the patch back in April and, as we discussed on the mailing list, getting it to work in Chrome et al seems to depend on creating a totally unrelated DIV before triggering the iframe request. This make me feel that there is something lurking inside the iframe code that will bite us soon again...
I know Dojo has an iframe io provider, could you have a look at that and see if they manage without creating such a dummy element?
I'm really hoping that you can find an updated solution. That would probably also fix the Opera part of
DWR-241.
batch.iframe = batch.document.getElementById(idname);
to
batch.iframe = batch.div.firstChild;
The form is posted to a new tab though