jsCountdown

I installed but I want to know how can I use it for two different Countdown?

I need this to Count UP from a date in the past. Example: The Number of Days Since the Last Accident”. Can you add this to the script? I need a Count DOWN and a Count UP that look the same. PS. My managers want it very soon. Like this week. We are holding off on buying it until it can count both up and down. -Thanks so much in advance.