diff --git a/lib/OpenLayers/Control/PanZoomBar.js b/lib/OpenLayers/Control/PanZoomBar.js
index 8768be967d..a977ab69f6 100644
--- a/lib/OpenLayers/Control/PanZoomBar.js
+++ b/lib/OpenLayers/Control/PanZoomBar.js
@@ -99,7 +99,7 @@ OpenLayers.Control.PanZoomBar = OpenLayers.Class(OpenLayers.Control.PanZoom, {
 
         this.map.events.un({
             "changebaselayer": this.redraw,
-            "resize": this.redraw,
+            "updatesize": this.redraw,
             scope: this
         });
 
@@ -119,7 +119,7 @@ OpenLayers.Control.PanZoomBar = OpenLayers.Class(OpenLayers.Control.PanZoom, {
         OpenLayers.Control.PanZoom.prototype.setMap.apply(this, arguments);
         this.map.events.on({
             "changebaselayer": this.redraw,
-            "resize": this.redraw,
+            "updatesize": this.redraw,
             scope: this
         });
     },
diff --git a/lib/OpenLayers/Map.js b/lib/OpenLayers/Map.js
index a91f8703ef..c125f27f5e 100644
--- a/lib/OpenLayers/Map.js
+++ b/lib/OpenLayers/Map.js
@@ -83,6 +83,7 @@ OpenLayers.Map = OpenLayers.Class({
      * mouseout - triggered after mouseout the map
      * mousemove - triggered after mousemove the map
      * changebaselayer - triggered after the base layer changes
+     * updatesize - triggered after the <updateSize> method was executed
      */
 
     /**
@@ -1490,6 +1491,7 @@ OpenLayers.Map = OpenLayers.Class({
     
             }
         }
+        this.events.triggerEvent("updatesize");
     },
     
     /**