popup doesnt want a reference back to the map, it wants a reference to the div that it was added to. this we will call 'parent'. with this reference, it will be able to destroy itself

git-svn-id: http://svn.openlayers.org/trunk/openlayers@229 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -151,7 +151,7 @@ OpenLayers.Map.prototype = {
     * @param {OpenLayers.Popup} popup
     */
     addPopup: function(popup) {
-        popup.map = this;
+        popup.parent = this.viewPortDiv;
         this.popups.push(popup);
         var popupDiv = popup.draw();
         if (popupDiv) {