How to get the status/progress of a file upload

I am trying to design a form where users can upload images/files. However they will be allowed to upload larger files in the range of 50 to 100mb. This would obviously be a good idea to give them some indicator that the upload is progressing, however I don't see any way to report this status back with CFFile.

Is there another way of doing it, or is there a new feature that I just don't know about that can give me the upload progress?

Note: The upload will be done via ajax, so javascript options are a possibility.

Thanks,