Navigation Solution - Need some ideas

[eluser]new_igniter[/eluser]
Hello,

wondering if anyone could outline creating a horizontal, mouseon/off states, navigation system.

I am hesitant to place the state variable in the url, as I would prefer to change the page behind the scenes. Any ideas or links to other posts, (i was not succesful in finding them) would be very helpful.

Regards,
Peter