amcharts Column with images

HTML

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

JavaScript

// note, each data item has "bullet" field.
var columnChartData = [{
    name: "John",
    points: 35654,
    color: "#7F8DA9",
    bullet: "http://www.amcharts.com/lib/images/0.gif"},
{
    name: "Damon",
    points: 65456,
    color: "#FEC514",
    bullet: "http://www.amcharts.com/lib/images/1.gif"},
{
    name: "Patrick",
    points: 45724,
    color: "#DB4C3C",
    bullet: "http://www.amcharts.com/lib/images/2.gif"},
{
    name: "Mark",
    points: 13654,
    color: "#DAF0FD",
    bullet: "http://www.amcharts.com/lib/images/3.gif"}];


AmCharts.ready(function() {
    // SERIAL CHART
    var chart = new AmCharts.AmSerialChart();
    chart.dataProvider = columnChartData;
    chart.categoryField = "name";
    chart.startDuration = 1;
    // sometimes we need to set margins manually
    // autoMargins should be set to false in order chart to use custom margin values                
    chart.autoMargins = false;
    chart.marginRight = 0;
    chart.marginLeft = 0;
    chart.marginBottom = 0;
    chart.marginTop = 0;

    // AXES
    // category
    var categoryAxis = chart.categoryAxis;
    categoryAxis.inside = true;
    categoryAxis.axisAlpha = 0;
    categoryAxis.gridAlpha = 0;
    categoryAxis.tickLength = 0;

    // value
    var valueAxis = new AmCharts.ValueAxis();
    valueAxis.minimum = 0;
    valueAxis.axisAlpha = 0;
    valueAxis.maximum = 80000;
    valueAxis.dashLength = 4;
    chart.addValueAxis(valueAxis);

    // GRAPH
    var graph = new AmCharts.AmGraph();
    graph.valueField = "points";
    graph.customBulletField = "bullet"; // field of the bullet in data provider
    graph.bulletOffset = 16; // distance from the top of the column to the bullet
    graph.colorField = "color";
    graph.bulletSize = 34; // bullet image should be rectangle (width = height)
    graph.type = "column";
    graph.fillAlphas = 0.8;
    graph.cornerRadiusTop = 8;
    graph.lineAlpha = 0;
    chart.addGraph(graph);

    // WRITE
    chart.write("chartdiv");
});