Ad networks to allow JS/AJAX banner refreshes?

As I’ve posted before, I run a website that creates different internet TV shows via Brightcove — each season’s videos are put into one video player and put next to a banner. A lot of visits end up being 30minutes+ to the same page, but of course AdSense (who the site current uses) doesn’t allow refreshes, so it’s the same banner the entire duration. This is really bad (although eCPM is still over a dollar, it could be a lot higher).
I’ve contacted AdBrite and BidVertiser about allowing me to refresh it with JS, but no responses yet. TribalFusion I’m sure wouldn’t either… but I’m not positive on this yet either.
CPM obviously won’t work in this situation.
Any ad networks that DO allow this? Any information would be great, because I can’t seem to find a solution here, but I’m not ripping each video on it’s own page — I refuse to […]

Original post by creative4w3