There was a bug when the countdown come to 0, It start again with an aleatory number.
Also added a option to countdown continuous from for example 120 seconds that allow 120, 119, 118... 101, 100, 99, 98, 97, ... 0
Added continuously countdown and fixed non stop at end
Thanks eusonlito; will keep your name on the license as well.
Oh! no problem, you can remove it without problem :) I only have added some minor changes.
Thanks for this script!