The PEAR::HTML_TreeMenu PHP package provides methods for HTML tree menus. PHP Based api creates a tree structure using a couple of small PHP classes. This can then be converted to javascript using the printMenu() method. The tree is dynamic in IE 4 or higher, NN6/Mozilla and Opera 7, and maintains state (the collapsed/expanded status of the branches) by using cookies. Other browsers display the tree fully expanded. Each node can have an optional link and icon.