I found the solution.
The problem:
Hiding the scroll bar with some method like:
CSS:
overflow-y: hidden;
GSAP:
TweenLite.set ("# scroller", {overflowY: "hidden"});
The event mouse wheel stops working.
The solution is to revive the event with something like:
$ event.props.push ("wheelDelta").;
$ ('Element'). On ('mousewheel DOMMouseScroll', function (e) {
var delta = e.wheelDelta | |-e.detail;
this.scrollTop + = (delta <0 1: -1) * 30;
e.preventDefault ();
});
this with the help of jQuery.