Multiple videos within same frame

I’ve got a number of separate videos that I’d like to be able to click on the title and have it appear in the same frame. I.e. first video title: Overview; second video title: Section 1; third video title: Section 2, etc.

I don’t care about changing the thumbnail, I just want to be able to view the title and click o it to view the video, next title view in same frame as first, etc.

The page I need help with: [log in to see the link]