You can see the current code live here. (You have to register / Login / Upload some dummy pics / Nav back to that url, since the link isn’t enabled on the site)
Please pastebin the code. I’m not downloading a bit of text.
I’ve written a script that does exactly what you’re looking for, so I know it’s possible (at least in Firefox). It should be along the lines of [DOM object of image].setAttribute(“src”, “whateveryouwant”);