This technique works wonderfully! Very neat and functional, looks great on the page too. Thank you!
this technique requires hardcoding in the previous and next page, right? is there someway to dynamically decide on these pages? what if you don't know the path the user has taken?
There is a more automatic code here:
NextPage / PreviousPage Module
I can't find a way to comment on that page, so I'll do it here.
Choosing categories to navigate is ok, but I don't really use them. What would be useful for me, and I hope a lot more people, is to navigate the pages that share the same parent page.
I'd gladly see this implemented as an alternative way of navigating my wiki.