wCharts);
		function drawCharts() {
			var data = new google.visualization.DataTable();
			data.addColumn({type: 'string'});
			{{range $.Graph.Headers}}
				data.addColumn({type: 'number', label: '{{.Name}}'});
				data.addColumn({type: 'string', role: 'tooltip'});
			{{- end}}
			data.addRows([ {{range $.Graph.Columns}}
					[ "{{.Hint}}", {{range .Vals}}
						{{if .IsNull}}null{{else if .Val}}{{.Val}}{{end}}, '{{.Hint}}',
					{{- end}}
					],
				{{- end}}
			]);
			new google.visualization.LineChart(