From 85b14a3c937becd98ae52079c2d37bb256d92876 Mon Sep 17 00:00:00 2001
From: euzuro <euzuro@metacarta.com>
Date: Wed, 7 Jun 2006 16:07:26 +0000
Subject: [PATCH] when we destroy a grid layer, destroy all of its tiles

git-svn-id: http://svn.openlayers.org/trunk/openlayers@540 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 lib/OpenLayers/Layer/Grid.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index eb4f72c023..2ed4b61079 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -35,6 +35,16 @@ OpenLayers.Layer.Grid.prototype = Object.extend( new OpenLayers.Layer(), {
                                             OpenLayers.Layer.Grid.TILE_HEIGHT);
     },
 
+    /**
+     * 
+     */
+    destroy: function() {
+        this.params = null;
+        this.clearGrid();
+        this.grid = null;
+        OpenLayers.Layer.prototype.destroy.apply(this, arguments); 
+    },
+
     setTileSize: function (size) {
         this.tileSize = size.copyOf();
     },