A graduated blue Gauge chart

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.dynamic.js"></script>
<script src="RGraph.gauge.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="250" height="250">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Gauge({
        id: 'cvs',
        min: 0,
        max: 10,
        value: 7,
        options: {
            backgroundColor: 'Gradient(white:#00a)',
            textColor: 'white',
            tickmarksLargeColor: 'white',
            tickmarksSmallColor: 'white',
            colorsRedColor: 'rgba(0,0,0,0)',
            colorsYellowColor: 'rgba(0,0,0,0)',
            borderInner: '#00c',
            borderOuter: 'Gradient(blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:blue:black)',
            adjustable: true
        }
    }).draw();
</script>