function move(button) {
    var left;
    if (button == 'video_button') {
        left = 649;
    }
    else {
        left = 780;
    }

    var button = document.getElementById(button);

    button.style.marginLeft = left + "px";
    button.style.marginTop = "205px";
}

function move_out(button) {
    var left;
    if (button == 'video_button') {
        left = 650;
    }
    else {
        left = 781;
    }

    var button = document.getElementById(button);

    button.style.marginLeft = left + "px";
    button.style.marginTop = "206px";
}