Tonight I released another jQuery plugin call The Final Countdown. It is a very simple to use countdown timer and it is, indeed, the last countdown timer you will ever need. To use it, you just select the DOM element that will contain the timer and call createTimer(). You can then start and stop the timer by calling startTimer() and pauseTimer() on the same element. It has all the essential options including robust date output format support and callbacks for clock ticks and timer completion.

You can find all the details on the github page at http://github.com/paulelliott/jquery-the_final_countdown