Addressing @bartvde's review comments

lib/OpenLayers/Layer/Grid.js

@@ -377,7 +377,7 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
         // we do not want to copy reference to grid, so we make a new array
         obj.grid = [];
         obj.gridResolution = null;
-        // same for backbuffer and tile queue
+        // same for backbuffer
         obj.backBuffer = null;
         obj.backBufferTimerId = null;
         obj.loading = false;

lib/OpenLayers/Tile.js

@@ -193,10 +193,13 @@ OpenLayers.Tile = OpenLayers.Class({
      *     is to call <clear> and return the result from <shouldDraw>.
      *
      * Parameters:
-     * force - {Boolean} No beforedraw event will be fired.
+     * force - {Boolean} If true, the tile will not be cleared and no beforedraw
+     *     event will be fired. This is used for drawing tiles asynchronously
+     *     after drawing has been cancelled by returning false from a beforedraw
+     *     listener.
      * 
      * Returns:
-     * {Boolean} Whether or not the tile should actually be drawn. Retruns null
+     * {Boolean} Whether or not the tile should actually be drawn. Returns null
      *     if a beforedraw listener returned false.
      */
     draw: function(force) {

lib/OpenLayers/Tile/Image.js

@@ -298,10 +298,10 @@ OpenLayers.Tile.Image = OpenLayers.Class(OpenLayers.Tile, {
     
     /**
      * APIMethod: setImage
-     * Sets the image element or this tile. This method should only be called
+     * Sets the image element for this tile. This method should only be called
      * from beforeload listeners.
      *
-     * Paramters
+     * Parameters
      * img - {HTMLImageElement} The image to use for this tile.
      */
     setImage: function(img) {

lib/OpenLayers/TileManager.js

@@ -17,7 +17,7 @@
  *
  * Queueing avoids unnecessary image requests while changing zoom levels
  * quickly, and helps improve dragging performance on mobile devices that show
- * a lag in dragging when loading of new images start. <zoomDelay> and
+ * a lag in dragging when loading of new images starts. <zoomDelay> and
  * <moveDelay> are the configuration options to control this behavior.
  *
  * Caching avoids setting the src on image elements for images that have already
@@ -74,8 +74,8 @@ OpenLayers.TileManager = OpenLayers.Class({
     
     /**
      * Property: tileCacheIndex
-     * {Array<String>} URLs of cached tiles. First entry in each array is the
-     * least recently used.
+     * {Array(String)} URLs of cached tiles. First entry is the least recently
+     *    used.
      */
     tileCacheIndex: null,    
     
@@ -120,6 +120,13 @@ OpenLayers.TileManager = OpenLayers.Class({
         });
     },
     
+    /**
+     * Method: removeMap
+     * Unbinds this instance from a map
+     *
+     * Parameters:
+     * map - {<OpenLayers.Map>}
+     */
     removeMap: function(map) {
         if (this._destroyed) {
             return;
@@ -141,6 +148,7 @@ OpenLayers.TileManager = OpenLayers.Class({
         }
         delete this.tileQueue[map.id];
         delete this.tileQueueId[map.id];
+        OpenLayers.Util.removeItem(this.maps, map);
     },
     
     /**
@@ -321,7 +329,7 @@ OpenLayers.TileManager = OpenLayers.Class({
      * Adds, updates, removes and fetches cache entries.
      *
      * Parameters:
-     * evt - {Object} Listener argument of the tile's loadstart event
+     * evt - {Object} Listener argument of the tile's beforeload event
      */
     manageTileCache: function(evt) {
         var tile = evt.object;
@@ -370,12 +378,15 @@ OpenLayers.TileManager = OpenLayers.Class({
         var layer = evt.object;
         var tileQueue = this.tileQueue[layer.map.id];
         for (var i=tileQueue.length-1; i>=0; --i) {
-            if (tileQueue.layer === layer) {
+            if (tileQueue[i].layer === layer) {
                 tileQueue.splice(i, 1);
             }
         }
     },
     
+    /**
+     * Method: destroy
+     */
     destroy: function() {
         for (var i=this.maps.length-1; i>=0; --i) {
             this.removeMap(this.maps[i]);