The syntax is very simple. Juse use
$(selector).countdown(options);
to generate a countdown timer. If the selected element already has a countdown, the previous one will be overwritten.
The available options and their default values are:
{
// the time to count down from
hours : 0,
minutes : 0,
seconds : 0,
milliseconds : 0,
// function to run when done
done : function(){},
// whether to count down or up
reverse : false
}