code: function() {
    var doc = document.documentElement;
    return {
      x: (window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0),
      y: (window.pageYOffset || doc.scrollTop)  - (doc.clientTop || 0)
    };
  }
docs: Read data to pass through for Scroll event to prevent repeated reads
  @return {Object}       Scroll properties of element