The following works for me in my Nexus 4 emulator. Taken mostly from Google Maps JavaScript API:
<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<script scr="jquery.js></script>
<link rel="stylesheet" href="jquery.mobile-1.3.0.css" />
<script type="text/javascript" src="cordova-2.4.0.js"></script>
<script type="text/javascript" src="jquery.mobile-1.3.0.min.js"></script>
<style type="text/css">
html, body, #map-canvas {
margin: 0;
padding: 0;
height: 100%;
}
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script type="text/javascript">
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(-34.397, 150.644),
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map-canvas"),
mapOptions);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"></div>
</body>
</html>