File upload progress bar in iframe
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So - I am well into a project but need to adjust a file upload form to give it a progress bar. (last minute request)

I am uploading the file via an iframe so ideally want to keep the same solution if poss (No page refreshes)

My searches are drawing a blank as the only solution I have seen requires php version 5.2 and the APC module installed. I have neither (running php version 5.1.6) - can install APC if required.

I am open to anything (flash, jquery) and am really posting as a last resort to get some ideas or even gauge if its possible.