.php timer counts down from 120 seconds, but doesn't auto refresh

The timer counts down from 120 seconds when it starts, but I have to manually refresh the page over and over and over to watch it count down.

The div the timer appears in is here: http://ift.tt/216aLiw

here is the .php timer: http://ift.tt/1SCcdJl

Any insight into why it doesn't auto refresh would be greatly appreciated.