Hide Fixed Menu while scrolling in both directions

Solution:

Try This Code

var topPosition = 0;

$(window).scroll(function() {
 
    var scrollMovement = $(window).scrollTop();
    var nav = $('#global-header-section');
    if (scrollMovement == topPosition){      
         nav.show (20);
    }
    else{
        if(!nav.is(':hidden')){         
            nav.hide (20);
        }
        
    }
    
});