replacement for document.readyState in Win/Firefox?

[Peter Michaux]

Hi,

I am polling a frame from the parent window for readyState "complete".
Unfortunately Win/Firefox doesn't have readyState. I'm looking for
ways to deduce the same information. Maybe the document height hasn't
changed for one second would be a good indicator that the images are
loaded. A few crazy tricks like this would probably be good enough for
me. This is for an automated test suite and not for production code.

Does anyone know if there is some function that you can't call until
after the window.onload event? Maybe something that throws an error
before window.onload?

Any other ideas?

Thanks,
Peter