Alternative to FileReference upload function

For 2 weeks now I’ve been trying to debug what’s wrong with my application, in failing to upload a file. I traced using firebug, and flash doesnt even TRY to access the aspx script which uploads. Im going nuts.

So Im trying to look now for an alternative, preferrably using javascript. Like taking all that upload behavior to be javascript’s responsibility rather than flash’s responsibility. Do you guys have any alternatives or advice I can take?