<html>

<head>

<title>OpenLayers + MapQuest</title>

<script src="http://www.openlayers.org/api/OpenLayers.js"></script>

<script type="text/javascript">

var map;

var arrayOSM;

var arrayAerial;

var baseOSM;

var baseAerial;

function init(){

map = new OpenLayers.Map('map');

arrayOSM = ["http://otile1.mqcdn.com/tiles/1.0.0/map/${z}/${x}/${y}.jpg",

"http://otile2.mqcdn.com/tiles/1.0.0/map/${z}/${x}/${y}.jpg",

"http://otile3.mqcdn.com/tiles/1.0.0/map/${z}/${x}/${y}.jpg",

"http://otile4.mqcdn.com/tiles/1.0.0/map/${z}/${x}/${y}.jpg"];

arrayAerial = ["http://otile1.mqcdn.com/tiles/1.0.0/sat/${z}/${x}/${y}.jpg",

"http://otile2.mqcdn.com/tiles/1.0.0/sat/${z}/${x}/${y}.jpg",

"http://otile3.mqcdn.com/tiles/1.0.0/sat/${z}/${x}/${y}.jpg",

"http://otile4.mqcdn.com/tiles/1.0.0/sat/${z}/${x}/${y}.jpg"];

baseOSM = new OpenLayers.Layer.OSM("MapQuest-OSM Tiles", arrayOSM);

baseAerial = new OpenLayers.Layer.OSM("MapQuest Open Aerial Tiles", arrayAerial);

map.addLayer(baseOSM);

map.addLayer(baseAerial);

map.addControl(new OpenLayers.Control.LayerSwitcher());

map.setCenter(

new OpenLayers.LonLat(-71.057205,42.362942).transform(

new OpenLayers.Projection("EPSG:4326"),map.getProjectionObject()), 16

);

}

</script>

</head>

<body onload="init()">

<div id="map"></div>

</body>

</html>