jQuery Sparkline - Overriden tooltip

https://groups.google.com/d/topic/jquery-sparkline/s-XjpA9QMWo/discussion

HTML

<script src="http://omnipotent.net/jquery.sparkline/2.1/jquery.sparkline.js"></script>
<p>
Barchart appears here: <span id="bar">&nbsp;</span>
</p><p>
linechart appears here: <span id="line">&nbsp;</span>
</p>

JavaScript

// jsfiddle configured to load jQuery Sparkline 2.1
// http://omnipotent.net/jquery.sparkline/

// Values to render
var values = [5, 4, 5, -1, 0, 3];

// Draw a sparkline for the #sparkline element
$('#bar').sparkline(values, {
    type: "bar",
    // Make the tooltip say "NA" for values of -1
    tooltipFormat: "{{value:val}}",
    tooltipValueLookups: {"val": {"-1": "N/A"}}
});

$('#line').sparkline(values, {
    type: "line",
    // Make the tooltip say "NA" for values of -1
    tooltipFormat: "{{x:val}}",
    tooltipValueLookups: {"val": {"-1": "N/A"}}
});