ElementStacks
by gopinaghr
HTML
<script src="http://highcharts.com/js/testing.js"></script>
<div id="container" style="height: 400px"></div>
JavaScript
var chart = new Highcharts.Chart({
chart: {
renderTo: 'container'
},
series: [{
data: [[6, 540], [7, 540], [7, 1620], [8, 1620]]
},{
data: [[6, 340], [7, 340], [7, 620], [8, 620]]
}]
});