The server-side code should consist of two parts.
1. For IE6-8, Opera, older versions of other browsers you get the file as
you normally do with regular form-base uploads.
2. For browsers which upload file with progress bar, you will need to get the raw
post data and write it to the file.
## Return values ##
You should return json as a text/html, and escape all
'<' as '<', '>' as '>', and '&' as '&'.
Return
{"success":true} when upload was successful
{"error":"error message to display"} in case of error
Send me a mail to andrew (at) valums.com, if you will have any questions.
