Thanks, the current class option is pretty cool and will be useful. Maybe this outline of the vertical navigation I am looking for will explain better.
Level 1 and 2 always display. *level 1 **level 2 ***(hidden till mouseover of level 2) level 3 ***(hidden till mouseover of level 2) level 3 **level 2 *level 1 **level 2 ***(hidden till mouseover of level 2) level 3 *level 1