(function(window)
{

    var isScrolling = true,
        body = document.body,
        $stopScrollBtn = document.createElement('div'),
        scrollDelay = .2;

    function applyStyles(element, styles)
    {
        for(var rule in styles)
        {
            if(styles.hasOwnProperty(rule))
            {
                element.style[rule] = styles[rule];
            }
        }
    }

    applyStyles($stopScrollBtn, {
        display           : 'inline-block',
        position          : 'fixed',
        top               : '10px',
        right             : '10px',
        zIndex            : 100000000,
        backfaceVisibility: 'hidden',
        color             : 'white',
        backgroundColor   : 'red',
        padding           : '10px 20px',
        borderRadius      : '5px',
        fontSize          : '20px',
        fontFamily        : 'Helvetica, sans-serif',
        cursor            : 'pointer'
    });

    $stopScrollBtn.innerHTML = 'Stop Auto-scroll';

    body.appendChild($stopScrollBtn);

    var interval = window.setInterval(scrollToBottom, scrollDelay * 1000);

    function scrollToBottom()
    {
        if(isScrolling)
        {
            window.scroll(0, body.offsetHeight);
        }
    }

    function stopAutoScroll()
    {
        isScrolling = false;
        window.clearInterval(interval);
        body.removeChild($stopScrollBtn);
    }

    $stopScrollBtn.addEventListener('click', stopAutoScroll);
    //window.addEventListener('mousewheel', function(event)
    //{
    //  if(Math.abs(event.deltaY) > 15)
    //  {
    //      if(isScrolling)
    //      {
    //          stopAutoScroll();
    //      }
    //  }
    //});

})(window);