Adding code to wordpress Blog

I got a code similar to this site, [login to view URL] When you enter the page there is a pop up that getting closed after 15 secs, after the ad closes there is a Play button on the video, when you hit the play there is loading bar that searches for link (not really searching but wasting time for another ad to show up) - and then when it ready you can click and it reveal the video/movie/stream behind it. Now i got this code and i want to be able to use it on my wordpress blog, i got few posts with videos on them and i want to hide it untill someone goes by steps and then the video reveals. I want to be able to this code on specific posts that i choose, in easy way.