Here is a neat ajax upload script that uses javascript to create the iframe 
required for the upload:

http://www.ajax-tutorials.com/tutorial-list/resource/AJAX_file_upload/view.php

Andrew.

> > You're right, I'm just passing a string and not 
> > actually submitting a form. But why can't I 
> > assign the value of the string being passed to a 
> > variable in the form scope?
> 
> For security reasons, there are lots of restrictions with file uploads. 
> You actually have to submit a form with a file upload field, which is 
> why you need a separate frame/iframe for the form if you want to 
> remain within the same interface.
> 
> Dave Watts, CTO, Fig Leaf Software 


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