PHP Layers Menu is a hierarchical menu system to prepare "on the fly" DHTML
menus relying on the PHP scripting engine for the processing of data items.
It is released under the GNU Lesser General Public License (LGPL), either
Version 2.1, or (at your option) any later version.
It supports a wide range of browsers: Mozilla, Konqueror, Netscape, Safari,
Opera, Internet Explorer; rather old browser versions are supported, too;
accessibility is provided for text-only browsers.
It achieves a compact layout and a compact output code also for menus with
a large number of entries.
It provides horizontal and vertical layers-based menus whose behavior is
analogous to menus of commonly used GUI-based applications. It also provides
JavaScript-based tree menus, whose look is analogous to the most widely used
file managers and bookmark handling tools.