Adobe AEM jQuery scroll event not firing -

i'm trying add class nav-menu assumes fixed position after amount of scrolling. variations of code work in standard environment. however, aem not playing others. report $(window).scrolltop() value in console along value navmenupos.top. no matter try though, cannot "hi" me. scroll event appears not firing. here code:

$(document).ready(function() {      var navmenu = $('#nav-menu');     var navmenupos = $('#nav-menu').offset();      console.log("window scroll top is: " + $(window).scrolltop());     console.log("the top of top menu is: " + navmenupos.top);      $(window).scroll(function() {          console.log("hi");          if ($(window).scrolltop() > navmenupos.top) {             navmenu.addclass('fixed-pos-menu');         }         else {             navmenu.removeclass('fixed-pos-menu');         }      });  }); 

in place of $(window).scroll(function() {}); i've tried $(window).bind('scroll', function() {}); , things like:

navmenu.on("scroll", function(e) {      if (this.scrolltop > 147) {         navmenu.addclass("fixed-pos-menu");     } else {         navmenu.removeclass("fixed-pos-menu");     }  }); 

none of these things triggering scroll event.

the window object appears present can information top. maybe aem doesn't see scrolling part of page?