Nornix TreeMenu is a free cross browser tree menu built with web standards, released under the LGPL license. Nornix TreeMenu uses fast and standards compliant HTML, CSS and JS code. The tree menu degrades gracefully in older browsers, where it will show up as nested bulleted lists. The CSS classes needed for Nornix TreeMenu can be inserted either server-side or client-side. Nornix TreeMenu strictly separates content, presentation and behaviour. It is easy to apply different skins to the tree menu.