--- /dev/null
+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.
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