Basic CloudMade tile layer for Leaflet

TileLayer.CloudMade.js

L.TileLayer.CloudMade = L.TileLayer.extend({
	options: {
		maxZoom: 18,
		attribution: 'Map data &copy; 2011 <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery &copy; 2011 <a href="http://cloudmade.com">CloudMade</a>'
	},

	initialize: function(key, styleId, options) {
		var url = 'http://{s}.tile.cloudmade.com/{key}/{styleId}/256/{z}/{x}/{y}.png',
		    urlParams = {key: key, styleId: styleId || 997};

		L.TileLayer.prototype.initialize.call(this, url, options, urlParams);
	}
});

Usage example:

var cloudmade = new L.TileLayer.CloudMade('YOUR-API-KEY', 997);