A customised Gauge chart

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.gauge.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="300" height="300">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Gauge({
        id: 'cvs',
        min: 0,
        max: 200,
        value: [184,12],
        options: {
            titleTop: 'Air Speed',
            titleTopSize: 22,
            titleTopFont: 'Impact',
            titleTopColor: 'white',
            titleTopSize: 24,
            titleTopItalic: true,
            
            titleBottom: 'Knots',
            titleBottomSize: 14,
            titleBottomItalic: true,
            titleBottomFont: 'Impact',
            titleBottomColor: '#ccc',
            titleBottomPos: 0.4,
            
            colorsRanges: [[160,200,'rgba(255,0,0,1)'], [120,160,'rgba(255,255,0,0.95']],
            
            backgroundColor: 'black',
            backgroundGradient: true,

            centerpinColor: '#666',
            
            needleSize: [null, 50],
            needleColors: ['Gradient(transparent:white:white:white:white:white)', 'Gradient(transparent:#d66:#d66:#d66:#d66)'],
            
            textColor: 'white',
            
            tickmarksLargeColor: 'white',
            tickmarksMediumColor: 'white',
            tickmarksSmallColor: 'white',
            borderOuter: '#666',
            borderInner: '#333'
        }
    }).draw();
</script>