the in game bonus timer resets very time you leave the page. could you set it to either till players are logged out or a few minutes after they are so that those who have their flashes crash or unintentionally close their browsers or those that refresh their pages do not loose x amount of time and are forced to wait that time again. As well as a min activity for the timer to continue. Say at least one battle every hour so people can not just leave their computers and do whatever. Do not let them lose the time but the timer will stall until they are active again.