Creating a Menu with submenus from existing markup

The markup for a Menu control follows that of YAHOO.widget.Module, with its body element (<div class="bd"/>) containing a list element (<ul/>).

Each item in a Menu is represented by a list item element (<li class="yuimenuitem"/>), each of which has a label (<a class="yuimenuitemlabel"/>) that can contain plain text or HTML.

In addition to a label, each item in a Menu can also have a submenu. A submenu can be added to a Menu item by nesting a Menu element inside its root (<li class="yuimenuitem"/>) element.

To instantiate a Menu, pass the id of its corresponding HTML element (in this case "basicmenu") to the Menu constructor (YAHOO.widget.Menu). Once instantiated, it is necessary to call the render method. If you are creating a Menu from markup that exists in the page you call render with no arguments.