Pausing the 'infinite menu' found here on kirupa?

Alright, this is my problem; i need to find a way to pause and start again from that same position the ‘infinite menu’ found here on kirupa
http://www.kirupa.com/developer/mx/infinite.htm
I’ve tried all ways i can think possible. I’m assuming the answer has to deal with intervals and timers…but i dont know where to even begin with those types of actions.
Any answers/help??=)