I've used this technique since 2006 or so with IE6. The only concern I know of relates to using odd port numbers without a protocol in IE (but I don't think thi

I've used this technique since 2006 or so with IE6. The only concern I know of relates to using odd port numbers without a protocol in IE (but I don't think this is a concern if the protocol is relative). At the time, every other browser tested worked as well (not that that was much of a shock). I don't have a copy of IE6 to test on at the moment, but what makes you think IE8 is required for relative protocols?