Menu experiment

I started experimenting with a new navigation menu I found. I'd like to convert to new, more dynamic navigation to better enable users to get to the floor they want in the part of the mansion they want (I'd create separate pages for each floor of the East and West Wings.

Here is my experiment page, not quite laid out right. The code to do this would be a pain to add to every page, so I'm looking for something that I might be able to do in a streamlined way (with a couple of carefully-constructed find-and-replace functions).