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alextea/gist:4586740

Created January 21, 2013 15:13
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Javascript snippet to track pixel density ratio.
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gistfile1.js
// track pixel density ratio
if (window.devicePixelRatio) {
_gaq.push(['_setCustomVar', 11, 'Pixel Ratio', String(window.devicePixelRatio), 2 ]);
}
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