code: function () {
  		// trigger the event only if listeners exist
  		var series = this,
  			options = series.options,
  			chart = series.chart,
  			tooltip = chart.tooltip,
  			hoverPoint = chart.hoverPoint;
  
  		// trigger mouse out on the point, which must be in this series
  		if (hoverPoint) {
  			hoverPoint.onMouseOut();
  		}
  
  		// fire the mouse out event
  		if (series && options.events.mouseOut) {
  			fireEvent(series, 'mouseOut');
  		}
  
  
  		// hide the tooltip
  		if (tooltip && !options.stickyTracking) {
  			tooltip.hide();
  		}
  
  		// set normal state
  		series.setState();
  		chart.hoverSeries = null;
  	}
docs: Series mouse out handler