ElementStacks

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'
    },
    xAxis: {
        type: 'datetime',
        tickInterval: 48 * 3600 * 1000
    },
    
    series: [{
        data: [
            [Date.UTC(2010, 0, 1), 29.9],
            [Date.UTC(2010, 0, 2), 71.5],
            [Date.UTC(2010, 0, 3), 106.4],
            [Date.UTC(2010, 0, 6), 129.2],
            [Date.UTC(2010, 0, 7), 144.0],
            [Date.UTC(2010, 0, 8), 176.0],
            [Date.UTC(2010, 0, 25), 170.0]
        ]        
    }]
});