Ajout image Jquery

var folMenu = $("#followMenu");
	var resMenuToggle = $("#responsiveMenuToggle");
	var lastId,
	    topMenu = $("#followMenu .mainMenu"),
	    topMenuHeight = 70,
	    // All list items
	    menuItems = topMenu.find("a"),
	    headerHeight = $("#topContainer").height(),
		
	    // Anchors corresponding to menu items
	    scrollItems = menuItems.map(function(){
	      var item = $($(this).attr("href"));
	      if (item.length) { return item; }
	    });