jQuery disable scroll when mouse over an absolute div

reference : http://stackoverflow.com/questions/7571370/jquery-disable-scroll-when-mouse-over-an-absolute-div
require : jquery mousewheel (https://github.com/brandonaaron/jquery-mousewheel)

       
        var _MOUSEWHEEL_STEP = 20;

        $('SELECTOR').bind('mousewheel DOMMouseScroll', function(e) {
            var scrollTo = null;

            if (e.type === 'mousewheel') {
                scrollTo = (e.originalEvent.wheelDelta * -1);
            }
            else if (e.type === 'DOMMouseScroll') {
                scrollTo = _MOUSEWHEEL_STEP * e.originalEvent.detail;
            }

            if (scrollTo) {
                e.preventDefault();
                $(this).scrollTop(scrollTo + $(this).scrollTop());
            }
        });