5 counters

Hi, i have 5 boxes on the home page of my site that need to display count down timers in the following format

02D 07H 54M 33S

The problem is that the 5 boxes are randomly generated and the they all are counting down from different times.

I am not sure how to handle this as i need to set 5 different times and link them to each box for each count down timers.

Has anyone come across any code that covers this, thanks in advance fo your help… it would be much appreciated…