        groups.add({
        id: 0,
        content: names[0],
        options: {
            drawPoints: {
                style: 'square' // square, circle
            },
            shaded: {
                orientation: 'bottom' // top, bottom
            }
        }});

    groups.add({
        id: 1,
        content: names[1],
        options: {
            style:'bar'
        }});

    groups.add({
        id: 2,
        content: names[2],
        options: {drawPoints: false}
    });

    groups.add(