Mootools Mega Menu is a plugin of Menu Pro that turns navigating large websites issue into a piece of cake. It is written in native mootools and works almost the same as Mootools Dropdown Menu so you don't have to worry about javascript conflict. Mootools Mega Menu not only has fewer accessibility problems but makes many menu items visible at once with no scrolling steps. Besides, the mega menu divides menu/sub-menu items into groups of navigation options and gives users more scope to customize their own menu appearance.