Build a Chrome Extension with java + post to remote php & facebook sdk & api

Hey guys, I need a chrome extnension which will be written in javscript and will do the following things: - use facebook's cookies of the user in order to post on users' facebook wall [I already have the api php code which does the posting action, so you'll have to somehow connect my php file with cookies]. I already have download few chrome extensions that do the exact same, but I don't have the knowledge to decrypt it or copy it, so i'll send you the crx files and you'll try to copy it, it will save you hours of work and you'll manage to finish it quickly and get your money faster. Basiclly, it's a viral chrome extention, that when insalled on the user's browser, it will inject remote php file and whenever i'll want I'll be able to post random stuff on his facebook wall.