flash object screenshot in browser

A website shows flash objects (flash games). I would like you to develop a solution for making screenshots by user. It is not possible to modify any flash game at all. You must provide external program (either javascript or another swf flash), which will just show a button "capture screenshot" right next to the game flash object and after user clicks that button, it will make a screenshot of the currently running flash game object and will post it somewhere (using HTTP POST). This should be trivial work, however I'm setting the price higher because I need you to provide actual working example in your bid (send by PM)