ing); // ref node changed from "seriesGroup" to "trackerGroup" -> dataLabel placed before/under scatter (and spline) trackers
					svg.insertBefore(series, chart.trackerGroup.element.nextSibling );
			}
			// Place tooltip on top
			var ttip = svg.getElementById('tooltip')
			svg.insertBefore(ttip, svg.getElementById('printButton') );
			
			// Hide grid lines
			$.each($('#widget-pr-space-{{widget.pk}} .highcharts-grid path'), 
			  function(i, elem) { 
					$(elem).attr('stroke-width','0');
			   });
		
	