give OpenLayers.Marker a destroy()

git-svn-id: http://svn.openlayers.org/trunk/openlayers@501 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Marker.js

@@ -30,6 +30,16 @@ OpenLayers.Marker.prototype = {
         this.events = new OpenLayers.Events(this, this.icon.imageDiv, null);
     },
     
+    destroy: function() {
+        this.map = null;
+        
+        // code to remove HTMLImage will go here
+        //  I realize now that it was not a good 
+        //  idea to give OpenLayers.Icon the 
+        //  'imageDiv' property.. that should be 
+        //  here. This is on my hot-list to fix
+    },
+    
     /** 
     * @param {OpenLayers.Pixel} px
     *