1 var map = new L.Map('map');

     2 var cloudmadeUrl = 'http://{s}.tile.cloudmade.com/3d56af3a9c9248eb8bca93645a548e76/997/256/{z}/{x}/{y}.png',

     3     cloudmadeAttrib = 'Map data © 2011 OpenStreetMap contributors, Imagery © 2011 CloudMade',

     4     cloudmade = new L.TileLayer(cloudmadeUrl, {maxZoom: 18, attribution: cloudmadeAttrib});

     5 var london = new L.LatLng(51.505, -0.09); // geographical point (longitude and latitude)

     6 map.setView(london, 13).addLayer(cloudmade);