collection.js

        var _menuClick = function (e) {
            var function_code = e.target.get("id").split("-")[1];
            Y.log('handling click...' + function_code, "info", log_key);

            var container = Y.one("#manage_action");

            Y.io(
                menu_config["base_url"] + function_code,
                {
                    on: {
                        complete : function (txnId, response) {
                            container.set("innerHTML", response.responseText);
                        },
                    }
                }
            );
        };

Y.delegate('click', _menuClick,'#manage_menu', '.yui3-menuitem-content');

/*
        Y.on(
            "click",
            _menuClick,
            "#manage_menu a.yui3-menuitem-content"
        );
        Y.on(
            "click",
            _menuClickLoadWidget,
            "#manage_menu em.yui3-menuitem-content"
        );
*/