How to deactive or reduce timer in a web page?

[mohsen deri]

Hi
I have a web page that contain one count down timer and just after that timer become zero I can reload page!
How I can deactivate that timer or at least reduce timer to a lower number?
and I use Firefox for this work

if you suggest java code or DHTML code, please tell me to how I can use that code

VERY TNX