return of state

I'm creating a custom menu and I have most of what I want to do figured out but I'm stuck on one problem. The menu has 16 different topics. I'm using hot spots on each selection. When you hover over a selection it gets highlighted. When you click on the hot spot, the state of the button changes permenently to the highlighted state and jumps to a new slide. On the new slide if you hover over any of the other selections they are highlighted and I the one that is curently highlighted is unhighlighted. So far I'm good on this. But, if you are not hovering over any selection, I would like the current topic/menu item to highlight again. What trigger or state control should I use to accomplish this?