diff --git a/src/ol/store.js b/src/ol/store.js
index 23796efe78..a2f2902a70 100644
--- a/src/ol/store.js
+++ b/src/ol/store.js
@@ -1,42 +1,44 @@
 goog.provide('ol.Store');
-goog.provide('ol.StoreProperty');
 
 goog.require('ol.Extent');
-goog.require('ol.Object');
 goog.require('ol.Projection');
 
 
-/**
- * @enum {string}
- */
-ol.StoreProperty = {
-  ATTRIBUTION: 'attribution',
-  EXTENT: 'extent',
-  PROJECTION: 'projection'
-};
-
-
 
 /**
  * @constructor
- * @extends {ol.Object}
+ * @param {ol.Projection} projection Projection.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @param {string=} opt_attribution Attribution.
  */
-ol.Store = function() {
+ol.Store = function(projection, opt_extent, opt_attribution) {
 
-  goog.base(this);
+  /**
+   * @private
+   * @type {ol.Projection}
+   */
+  this.projection_ = projection;
 
-  this.setExtent(null);
-  this.setProjection(null);
+  /**
+   * @private
+   * @type {ol.Extent}
+   */
+  this.extent_ = goog.isDef(opt_extent) ? opt_extent : projection.getExtent();
+
+  /**
+   * @private
+   * @type {string|undefined}
+   */
+  this.attribution_ = opt_attribution;
 
 };
-goog.inherits(ol.Store, ol.Object);
 
 
 /**
  * @return {string|undefined} Attribution.
  */
 ol.Store.prototype.getAttribution = function() {
-  return /** @type {string} */ (this.get(ol.StoreProperty.ATTRIBUTION));
+  return this.attribution_;
 };
 
 
@@ -44,7 +46,7 @@ ol.Store.prototype.getAttribution = function() {
  * @return {ol.Extent} Extent.
  */
 ol.Store.prototype.getExtent = function() {
-  return /** @type {ol.Extent} */ (this.get(ol.StoreProperty.EXTENT));
+  return this.extent_;
 };
 
 
@@ -52,15 +54,21 @@ ol.Store.prototype.getExtent = function() {
  * @return {ol.Projection} Projection.
  */
 ol.Store.prototype.getProjection = function() {
-  return /** @type {ol.Projection} */ (this.get(ol.StoreProperty.PROJECTION));
+  return this.projection_;
 };
 
 
+/**
+ * @return {Array.<number>|undefined} Resolutions.
+ */
+ol.Store.prototype.getResolutions = goog.abstractMethod;
+
+
 /**
  * @param {string|undefined} attribution Attribution.
  */
 ol.Store.prototype.setAttribution = function(attribution) {
-  this.set(ol.StoreProperty.ATTRIBUTION, attribution);
+  this.attribution_ = attribution;
 };
 
 
@@ -68,7 +76,7 @@ ol.Store.prototype.setAttribution = function(attribution) {
  * @param {ol.Extent} extent Extent.
  */
 ol.Store.prototype.setExtent = function(extent) {
-  this.set(ol.StoreProperty.EXTENT, extent);
+  this.extent_ = extent;
 };
 
 
@@ -76,5 +84,5 @@ ol.Store.prototype.setExtent = function(extent) {
  * @param {ol.Projection} projection Projetion.
  */
 ol.Store.prototype.setProjection = function(projection) {
-  this.set(ol.StoreProperty.PROJECTION, projection);
+  this.projection_ = projection;
 };
diff --git a/src/ol/tilestore.js b/src/ol/tilestore.js
index f1541e5241..6ace711f3c 100644
--- a/src/ol/tilestore.js
+++ b/src/ol/tilestore.js
@@ -11,13 +11,17 @@ goog.require('ol.TileUrlFunctionType');
 /**
  * @constructor
  * @extends {ol.Store}
+ * @param {ol.Projection} projection Projection.
  * @param {ol.TileGrid} tileGrid Tile grid.
  * @param {ol.TileUrlFunctionType} tileUrlFunction Tile URL.
+ * @param {ol.Extent=} opt_extent Extent.
+ * @param {string=} opt_attribution Attribution.
  * @param {string=} opt_crossOrigin Cross origin.
  */
-ol.TileStore = function(tileGrid, tileUrlFunction, opt_crossOrigin) {
+ol.TileStore = function(projection, tileGrid, tileUrlFunction, opt_extent,
+    opt_attribution, opt_crossOrigin) {
 
-  goog.base(this);
+  goog.base(this, projection, opt_extent, opt_attribution);
 
   /**
    * @private
@@ -54,19 +58,35 @@ goog.inherits(ol.TileStore, ol.Store);
  */
 ol.TileStore.createOpenStreetMap = function() {
 
+  var projection = ol.Projection.createFromCode('EPSG:3857');
   var tileGrid = ol.TileGrid.createOpenStreetMap(18);
   var tileUrlFunction = ol.TileUrlFunction.createFromTemplates([
     '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'
   ]);
+  var extent = projection.getExtent();
+  var attribution =
+      '&copy; ' +
+      '<a href="http://www.openstreetmap.org">OpenStreetMap</a> ' +
+      'contributors, ' +
+      '<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC BY-SA</a>';
   var crossOrigin = '';
 
-  return new ol.TileStore(tileGrid, tileUrlFunction, crossOrigin);
+  return new ol.TileStore(
+      projection, tileGrid, tileUrlFunction, extent, attribution, crossOrigin);
 
 };
 
 
+/**
+ * @inheritDoc
+ */
+ol.TileStore.prototype.getResolutions = function() {
+  return this.tileGrid_.getResolutions();
+};
+
+
 /**
  * @param {ol.TileCoord} tileCoord Tile coordinate.
  * @return {ol.Tile} Tile.