Menu structure

The wireframes show the page layout for an example hierarchical site, structured as:


 * Home
 * Classification
 * About us
 * Introduction
 * People
 * Biology
 * Gloassary
 * Galleries

The primary navigation shows the top level items, Home etc.,

The secondary navigation will display child items in the left hand sidebar. So if you are in the "About us" section of the site, the child items "Introduction, ..." will be displayed.

When a user clicks classification (although on real sites this will probably be the name of the classification - 'Stick insects' or something) the tree will display in the left hand side.

What this means for the design is:


 * The home page will never have a left hand side bar.
 * The species pages (which are under a classification) will always have a left hand side bar.
 * If a site doesn't have a classification, it won't necessarily have a left hand side bar - it depends on the depth of the site.