Multiple games with the same script on timeline

I have an HTML5/js  project that contains the Main UI and four types of games (drag and drop;...etc) and a script for each type of game, that types will be repeated in the project 80 times.

To do that. I make  80 movieclips in the lib and copy/paste the script that corresponds to each type of game on the timeline..which results in a big js file with multiple repeated scripts.

Is there a best strategy for doing that?