<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Retina</title>
<script src='http://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.js'></script>
<link href='http://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
var map = mapbox.map('map').zoom(5);
var retina = window.devicePixelRatio >= 2;
if (retina) {
// Retina tiles are sized 1/2 of normal tiles for twice the pixel
// density
map.tileSize = { x: 128, y: 128 };
// use a retina tileset
map.addLayer(mapbox.layer().id('examples.map-zq0f1vuc'));
} else {
// use a standard tileset
map.addLayer(mapbox.layer().id('examples.map-vyofok3q'));
}
</script>