(function($) {
  $.fn.disableOuterScroll = function() {
    return this.bind('mousewheel DOMMouseScroll', function(e) {
      var scrollTo = null;

      if(e.type == 'mousewheel') {
        scrollTo = (e.originalEvent.wheelDelta * -1);
      }
      else if(e.type == 'DOMMouseScroll') {
        scrollTo = 40 * e.originalEvent.detail;
      }

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