Boosted mega-menu is use for landing page with many cross-link
Html markup and espacially
<ul> menu hierarchy must absolutely be as follwing example :
Megamenu can be initialised to point to a specific menu item when main menu is opened. Call the init method with wanted item id.
You might as well keep control on focus when page is loaded, thus disabling focus on targeted item.
Default value for parameter
See a full implementation in the Orange News example page