I like that kind of insane creativity! I'm surprised that the SO poster got the synchronous XHR approach to work. When I did some tests with Chromium last year

I like that kind of insane creativity! I'm surprised that the SO poster got the synchronous XHR approach to work. When I did some tests with Chromium last year they seemed to show that an iframe runs in the same thread as its parent window. I wasn't testing XHR though, just animation. So if you ever do try this out, I would be interested to hear the results. Thanks!