amcharts Bar floating

HTML

<script src="http://www.amcharts.com/lib/amcharts.js" type="text/javascript"></script>
<div id="chartdiv" style="width: 100%; height: 350px;"></div>

JavaScript

var chartData = [{title:"sample 1",value:130},{title:"sample 2",value:26}];
			
var chart = new AmCharts.AmRectangularChart();
chart.categoryField = "title";
chart.dataProvider = chartData;
			
var graph = new AmCharts.AmGraph();
graph.valueField = "value";
graph.type = "column";
graph.fillAlphas = 1;
chart.addGraph(graph);
			
chart.write("chartdiv");