Update and improve gameplay in existing game coded in JavaScript

Update and Improve existing code ([login to view URL]) . If you inspect the code you will see that there are 3 different games in the code on the same platform(backgammon board). I want the to run as this Start- first game started /finish ,update the score(double win or single win),Second game start/finish ...update score ..Third game starts/finish update the score and again from game one in cycle until one player reach 6 points. So the game is cycle from three games who are rotating always (1-2-3-1-2-3-1...until one player reach 6 points) . Now as it is i don`t like at all the Gameplay of the game ...In this part should be the most of improvements .Also simple rating system should be a added to the game which will cycle monthly: example Month January player one wins 16 loses 5; player two wins 15 loses 7...Rating goes by number of wins if players has same number of wins then number of loses if that number is the same then they share same position. In short you have to make game playable and ready for graphic design.