YAHOO.example.onMenuBarReady = function() {

                // Instantiate and render the menu bar

                var oMenuBar = new YAHOO.widget.MenuBar("mainmenu", { autosubmenudisplay:true, hidedelay:750, lazyload:true });

                oMenuBar.render();

            };


            // Initialize and render the menu bar when it is available in the DOM

            YAHOO.util.Event.onContentReady("mainmenu", YAHOO.example.onMenuBarReady);