how to resume the timer from where it was paused using jquery

how to resume the timer from where it was paused using jquery

My app looks like this image(http://i.stack.imgur.com/0sqzi.png) , i am
having this code http://jsfiddle.net/XYevE/1/ ,but this code has one
problem,
Problem is when i press PAUSE btn & after few seconds again if i press the
play button then then timer is starting from the beginning . The timer
should continue from the current pause time,if user clicks play button
followed by pause button.
Please help me for this, i am trying to solve this issue since last 2
days. But still its not solved as per my app requirement.