Suggestions on "Loading" for possible long load-times?

Hey,

I've got a part of my site that is just prototyped at the moment. It's
not particularly optimized since it's still in the works.

I don't think it's going to take a considerable amount of time to load
while we have few users. But, when we start migrating our old users to
the new system, I can imagine there will be a delay before the
calculations are finished and the data is ready to display.

Unfortunately, this is real-time calculations so it's not a simple
matter of caching it to death. I'm not ready to do any major
optimization at this point anyways since it's still a work-in-
progress.

Anyways, I want to display a "loading" page while the data is
prepared. I don't mind if it's a matter of a redirect, done using
AJAX, or just using some sort of a Javascript technique that will
display the "Loading" dialog while the rest of the data is sent to the
browser. What are some suggestions on doing this with Django? I prefer
a simple, straight-forward method that won't cause a lot of
complication with the existing code base if at all possible.

Thanks!

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