--- /dev/null
+/**
+ * Namespace: Util.OSM
+ */
+OpenLayers.Util.OSM = {};
+
+/**
+ * Constant: MISSING_TILE_URL
+ * {String} URL of image to display for missing tiles
+ */
+OpenLayers.Util.OSM.MISSING_TILE_URL = OpenLayers.Util.getImagesLocation() + "404.png";
+
+/**
+ * Property: originalOnImageLoadError
+ * {Function} Original onImageLoadError function.
+ */
+OpenLayers.Util.OSM.originalOnImageLoadError = OpenLayers.Util.onImageLoadError;
+
+/**
+ * Function: onImageLoadError
+ */
+OpenLayers.Util.onImageLoadError = function() {
+ if (this.src.match(/^http:\/\/[abc]\.[a-z]+\.openstreetmap\.org\//)) {
+ this.src = OpenLayers.Util.OSM.MISSING_TILE_URL;
+ } else if (this.src.match(/^http:\/\/[def]\.tah\.openstreetmap\.org\//)) {
+ // do nothing - this layer is transparent
+ } else {
+ OpenLayers.Util.OSM.originalOnImageLoadError;
+ }
+};
+
+/**
+ * Class: OpenLayers.Layer.OSM.Mapnik
+ *
+ * Inherits from:
+ * - <OpenLayers.Layer.OSM>
+ */
+OpenLayers.Layer.OSM.Mapnik = OpenLayers.Class(OpenLayers.Layer.OSM, {
+ /**
+ * Constructor: OpenLayers.Layer.OSM.Mapnik
+ *
+ * Parameters:
+ * name - {String}
+ * options - {Object} Hashtable of extra options to tag onto the layer
+ */
+ initialize: function(name, options) {
+ var url = [
+ "http://a.tile.openstreetmap.org/${z}/${x}/${y}.png",
+ "http://b.tile.openstreetmap.org/${z}/${x}/${y}.png",
+ "http://c.tile.openstreetmap.org/${z}/${x}/${y}.png"
+ ];
+ options = OpenLayers.Util.extend({
+ numZoomLevels: 19,
+ buffer: 0,
+ transitionEffect: "resize"
+ }, options);
+ var newArguments = [name, url, options];
+ OpenLayers.Layer.OSM.prototype.initialize.apply(this, newArguments);
+ },
+
+ CLASS_NAME: "OpenLayers.Layer.OSM.Mapnik"
+});
+
+/**
+ * Class: OpenLayers.Layer.OSM.Osmarender
+ *
+ * Inherits from:
+ * - <OpenLayers.Layer.OSM>
+ */
+OpenLayers.Layer.OSM.Osmarender = OpenLayers.Class(OpenLayers.Layer.OSM, {
+ /**
+ * Constructor: OpenLayers.Layer.OSM.Osmarender
+ *
+ * Parameters:
+ * name - {String}
+ * options - {Object} Hashtable of extra options to tag onto the layer
+ */
+ initialize: function(name, options) {
+ var url = [
+ "http://a.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png",
+ "http://b.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png",
+ "http://c.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png"
+ ];
+ options = OpenLayers.Util.extend({
+ numZoomLevels: 18,
+ buffer: 0,
+ transitionEffect: "resize"
+ }, options);
+ var newArguments = [name, url, options];
+ OpenLayers.Layer.OSM.prototype.initialize.apply(this, newArguments);
+ },
+
+ CLASS_NAME: "OpenLayers.Layer.OSM.Osmarender"
+});
+
+/**
+ * Class: OpenLayers.Layer.OSM.CycleMap
+ *
+ * Inherits from:
+ * - <OpenLayers.Layer.OSM>
+ */
+OpenLayers.Layer.OSM.CycleMap = OpenLayers.Class(OpenLayers.Layer.OSM, {
+ /**
+ * Constructor: OpenLayers.Layer.OSM.CycleMap
+ *
+ * Parameters:
+ * name - {String}
+ * options - {Object} Hashtable of extra options to tag onto the layer
+ */
+ initialize: function(name, options) {
+ var url = [
+ "http://a.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png",
+ "http://b.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png",
+ "http://c.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png"
+ ];
+ options = OpenLayers.Util.extend({
+ numZoomLevels: 19,
+ buffer: 0,
+ transitionEffect: "resize"
+ }, options);
+ var newArguments = [name, url, options];
+ OpenLayers.Layer.OSM.prototype.initialize.apply(this, newArguments);
+ },
+
+ CLASS_NAME: "OpenLayers.Layer.OSM.CycleMap"
+});
+
+/**
+ * Class: OpenLayers.Layer.OSM.TransportMap
+ *
+ * Inherits from:
+ * - <OpenLayers.Layer.OSM>
+ */
+OpenLayers.Layer.OSM.TransportMap = OpenLayers.Class(OpenLayers.Layer.OSM, {
+ /**
+ * Constructor: OpenLayers.Layer.OSM.TransportMap
+ *
+ * Parameters:
+ * name - {String}
+ * options - {Object} Hashtable of extra options to tag onto the layer
+ */
+ initialize: function(name, options) {
+ var url = [
+ "http://a.tile2.opencyclemap.org/transport/${z}/${x}/${y}.png",
+ "http://b.tile2.opencyclemap.org/transport/${z}/${x}/${y}.png",
+ "http://c.tile2.opencyclemap.org/transport/${z}/${x}/${y}.png"
+ ];
+ options = OpenLayers.Util.extend({
+ numZoomLevels: 19,
+ buffer: 0,
+ transitionEffect: "resize"
+ }, options);
+ var newArguments = [name, url, options];
+ OpenLayers.Layer.OSM.prototype.initialize.apply(this, newArguments);
+ },
+
+ CLASS_NAME: "OpenLayers.Layer.OSM.TransportMap"
+});