367458 Pause / Play Button

Existing Javascript Count down program that needs to be upgraded . In the attachement, open the [login to view URL] file, set up your timer and start it, the file [login to view URL] will pop up and the file [login to view URL] will be displayed in the iframe in countdowntimer.html. I want to : 1. Add a pause/play button in [login to view URL] that will pause/play the time in [login to view URL] and [login to view URL] 2. Add 5 more timers inside the [login to view URL] where each one has its pause/play button and its time. When one of the five play button is click, the 4 other timers pause. The aim of this addon is to count the time of each speakers.