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',
        defaultSeriesType: 'spline'
    },
    xAxis: {
        type: 'datetime', tickInterval: 168 * 3600 * 1000, 
        dateTimeLabelFormats: { day: ' %e. %b %Y ' }
    },
    
    yAxis: {
        categories: ['Alex', 'John', 'Harry'],
        endOnTick: false,
        startOnTick: false
    },
    
    series: [{
        data: [ { name: 'Michael Feihstel', x: Date.UTC(2009,4,27), y: 150 },
                { name: 'Michael Feihstel', x: Date.UTC(2009,4,30), y: 150 } ]
        
    }]
});