[REQ] interactive video script wanted

[We Go]

I didnt know where to start this thread ... if it is wrong place please move and& sorry!

Ran across this video/gif [?] [?]

Code:

http://www.bossrevolution.com/slap_the_guy.aspx

where there is a bit of fun 'slapping' someone on the video, and response
is both vid and audio sync'd to the slap ... I realize this is likely oldhat to some
on here ... so I would like to get the script/plugin that does this ..

Anyone got suggestions?

tia,
We