Im not sure but I think it may be due to the buttons event-priority. Try this
Code:
function continu_leave()
{
	beep();
	wait(1);
	proc_kill((void*)continu_over);
}

Otherwise check proc_status(continu_over) after the proc_kill to see if all continu_over's were killed or not.
It may be have been successfully kill'ed but is being re-triggered for some reason.

"There is no fate but what WE make." - CEO Cyberdyne Systems Corp.
A8.30.5 Commercial