Does anyone know of a script that will automatically start downloading images from a cell photo once they visit a website and they approve the upload?
Sounds like a normal photo sharing script. Scripteen has one that was free (but pay if u need link removal). Scripteen support is useless, but that specific script did work exceptionally well.
You can't really access a phone's gallery from a webpage without some sort of app or similar running on the phone, which already has access to the gallery - hence a fully automatic upload of all pics isn't gonna be possible, I think. It would be something like this: visit webpage -> get asked if s/he wants to upload pictures -> s/he needs to actually chose images from the phone and click upload -> pics gets uploaded.