Subnavigation is a simple and free dotnetnuke menu module that adds css menu to a certain page displaying its sub pages. Once you add this module to the page you can specify a root page in this free menu module settings. All the sub pages of the specified root page will be displayed as root items of the menu. Sub pages of sub pages will be displayed under menu root items as well. The best way to understand how this free DNN module works is to take a look on our own subnavigation menu. This page is being displayed under the DotNetNuke modules page in our vertical Sub navigation module instance. Root page in module settings is the products page.
Module view layer is based on JQuery and it is pretty easy to customize animation effects and design of the module using CSS. There are no tables in this free dotnetnuke css navigation menu module. Default theme of the module is accordion. However, you can change the way module looks like and works using standard javascript and css techniques.