PHP Layers Menu is a hierarchical DHTML menu system that relies on the PHP scripting engine for the processing of data items. It achieves a compact layout and a compact output code 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. Menus are generated using data retrieved from files, strings, and databases. It supports Mozilla, Netscape 4, 6, and 7, Konqueror 2.2+/Safari, Opera 5+, and Internet Explorer 4+. It also provides accessibility solutions for browsers that do not support JavaScript.