html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var chart = anychart.area();

​

    var series = chart.rangeStepArea([

        {x: 'January', low: 3093, high: 19522},

        {x: 'February', low: 8205, high: 32622},

        {x: 'March', low: 4019, high: 41612},

        {x: 'April', low: 6920, high: 53752},

        {x: 'May', low: 12684, high: 31917},

        {x: 'June', low: 14924, high: 42052},

        {x: 'July', low: 7933, high: 69812},

        {x: 'August', low: 15573, high: 59922}

    ]);

​

    var state = series.normal();

​

    // Set low stroke.

    state.lowStroke(function () {

        return anychart.color.setThickness(this.sourceColor, 3);

    });

​

    chart.title('Set state low stroke parameter as a function');

    chart.container('container');

    chart.draw();

});