bubble up common functionality

git-svn-id: http://svn.openlayers.org/trunk/openlayers@165 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Grid.js

@@ -65,7 +65,14 @@ OpenLayers.Layer.Grid.prototype = Object.extend( new OpenLayers.Layer(), {
                                      bottomRightTile.bounds.right, 
                                      topLeftTile.bounds.top);
     },
+    
+    /**
+    */
     _initTiles:function() {
+
+        //first of all, clear out the main div
+        this.div.innerHTML = "";
+
         var viewSize = this.map.getSize();
         var bounds = this.map.getExtent();
         var extent = this.map.getFullExtent();

lib/OpenLayers/Layer/WFS.js

@@ -60,13 +60,6 @@ OpenLayers.Layer.WFS.prototype =
         return tile;
     },
 
-    /** clear out the layer's main div
-    */
-    _initTiles: function() {
-        this.div.innerHTML = "";
-        OpenLayers.Layer.Grid.prototype._initTiles.apply(this, arguments);
-    },
-    
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Layer.WFS"
 });

lib/OpenLayers/Layer/WMS.js

@@ -65,13 +65,6 @@ OpenLayers.Layer.WMS.prototype =
         return tile;
     },
 
-    /** clear out the layer's main div
-    */
-    _initTiles: function () {
-        this.div.innerHTML="";
-        OpenLayers.Layer.Grid.prototype._initTiles.apply(this, arguments);
-    },
-    
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Layer.WMS"
 });