Detect MouseWheel via javascript and do auto scroll as MouseWheel scroll.

Useful code for developers.

// detect mouse wheel and do scroll as per
if (document.addEventListener) {
    document.addEventListener("mousewheel", MouseWheelHandler(), false);
    document.addEventListener("DOMMouseScroll", MouseWheelHandler(), false);
} else {
    sq.attachEvent("onmousewheel", MouseWheelHandler());
}


function MouseWheelHandler() {
    return function (e) {
        // cross-browser wheel delta
        var e = window.event || e;
        var delta = Math.max(-1, Math.min(1, (e.wheelDelta || -e.detail)));

        //scrolling down?
        if (delta < 0) {
           // alert("Down");
        }

        //scrolling up?
        else {
            // alert("Up");
        }
        return false;
    }
}

Click here for demo