function triboo_nfwm() {

    var outerUL = $('#nav_main-navigation > ul');

    $('#nav_main-navigation').bind('mouseleave', function(e) {
        outerUL.children('li').removeClass('nav_hover');
    });
			
    outerUL.bind('mouseover', function(e) {

        var target = $(e.target);

        

        var liTag = target.parent();
        var ulTag = liTag.parent();
        var divTag = ulTag.parent();

        if( liTag.children("a").attr( "href" ) == "/it/Index" ) {
            outerUL.children('li').removeClass('nav_hover');
            return;
        }

        if (liTag.is('LI') && divTag.attr('id') == 'nav_main-navigation') {
            if (!liTag.hasClass('nav_hover')) {
                var flyoutTag = target.next();

                var flyoutListItems = flyoutTag.children('li');

                if (flyoutListItems.length != 0 && flyoutListItems.length % 2 == 0) { // odd number
                    flyoutListItems[flyoutListItems.length - 1].addClass('nav_last');
                }

                outerUL.children('li').removeClass('nav_hover');
                liTag.addClass('nav_hover');

                var ul = flyoutTag.children('ul');

                if (ul != null){
                    var existingHeight = ul.height();

                    flyoutTag.height(existingHeight);

                    flyoutTag.css('opacity', 0.1);
                    flyoutTag.animate({ 
                        'opacity': 1
                    }, 500);
                }
            }
        }

    });
}