function hscr(e) {
    if (!e) {
        e = window.event;
    }
    elemento = document.getElementById("cont");
    if (e.wheelDelta <= 0 || e.detail >= 0) {
        window.scrollBy(120, 0)
    } else window.scrollBy(-120, 0)
}
if (window.addEventListener) {
    window.addEventListener("DOMMouseScroll", hscr, false);
} else {
    document.onmousewheel = hscr;
}