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Linked Drop downs
Here
is an example of dealing with hierarchies 2 or 3 deep
on the same page.
Exercise:
Find several examples of 3 and 4 tiered navigational systems.
For instance, Amazon provides
access to a 2 tiered hierarchy. At the top level
you choose form Books, Music ... But on the left hand side
you can also choose a topic within Books. Directly under
the tab of Books are a range of additional ways of categorizing
books that apply even within the topic list, so it is a form
of orthogonal navigation. That is, it can apply to any level
of the heirarchy. In this exercise the goal is to find sites
that actually display several levels into the heirarchy. An
obvious example if MSNBC which uses
cascading menus to go 3 or even 4 levels deep. Find some other
examples of 3 and 4 level access that do not use cascading
menus.
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