Cookie expiry in minutes

Hi,

First of all thanks for sucha a great plugin.

That being said, is there any way i can set the cookie validity instead of days, express it in minutes?

The reason for this is because i need the timer to reset once it reaches zero, so a simple solution would be to change the cookie validity to minutes instead of days, or if you could think of a better way, i would be very gald to hear about it.

Thanks
kind regards