AS3 coder interacting with Javascript

You are an AS3 coder familiar with byte arrays, encoding/serialization, interacting with Javascript, and working with others' code. Google Gears and/or SQLite experience a bonus. Our web application has a feature which uses Flash (AS3) to take photos using the user's web cam, then passes the resulting byte array to PHP where it is reconstructed and saved on the server. However, we need to be able to take this web application offline, and we have chosen Gears to do so. The user takes the app offline, performs his tasks, then when he's reconnected to the server, we "sync" the data back with our central database. We don't have PHP to interact with Flash anymore, but we still need to allow users to take and save photos. We believe serializing the JPG byte array or encoding it with Base64 is the answer, but we lack the technical skill in ActionScript to pull this off. That's where you come in.