$chart = new Highchart();

$chart->chart->renderTo = "container";
$chart->chart->type = "column";
$chart->title->text = "Browser market share, April, 2011";
$chart->subtitle->text = "Click the columns to view versions. Click again to view brands.";
$chart->xAxis->categories = new HighchartJsExpr("categories");
$chart->yAxis->title->text = "Total percent market share";
$chart->plotOptions->column->cursor = "pointer";

$chart->plotOptions->column->point->events->click = new HighchartJsExpr(
    "function() {
    var drilldown = this.drilldown;
    if (drilldown) { // drill down
      setChart(drilldown.name, drilldown.categories, drilldown.data, drilldown.color);
    } else { // restore
      setChart(name, categories, data);
    }}");

$chart->plotOptions->column->dataLabels->enabled = 1;
$chart->plotOptions->column->dataLabels->color = new HighchartJsExpr("colors[0]");
$chart->plotOptions->column->dataLabels->style->fontWeight = "bold";

$chart->plotOptions->column->dataLabels->formatter = new HighchartJsExpr("function() {
    return this.y +'%';}");

$chart->tooltip->formatter = new HighchartJsExpr(
    "function() {
    var point = this.point,
        s = this.x +':<b>'+ this.y +'% market share</b><br/>';
    if (point.drilldown) {
      s += 'Click to view '+ point.category +' versions';
    } else {
      s += 'Click to return to browser brands';
    }
    return s;}");

$chart->series[] = array(
    'name' => new HighchartJsExpr("name"),
    'data' => new HighchartJsExpr("data"),
    'color' => 'white'
);

$chart->exporting->enabled = false;