diff --git a/lib/OpenLayers/Control/PanZoom.js b/lib/OpenLayers/Control/PanZoom.js
index b6f9116ef7..e2602d35b1 100644
--- a/lib/OpenLayers/Control/PanZoom.js
+++ b/lib/OpenLayers/Control/PanZoom.js
@@ -84,9 +84,12 @@ OpenLayers.Control.PanZoom.prototype =
         //we want to add the outer div
         this.div.appendChild(btn);
 
-        btn.onmousedown = this.buttonDown.bindAsEventListener(btn);
-        btn.onmouseup = this.doubleClick.bindAsEventListener(btn);
-        btn.ondblclick  = this.doubleClick.bindAsEventListener(btn);
+        OpenLayers.Event.observe(btn, "mousedown", 
+                                 this.buttonDown.bindAsEventListener(btn));
+        OpenLayers.Event.observe(btn, "mouseup", 
+                                 this.doubleClick.bindAsEventListener(btn));
+        OpenLayers.Event.observe(btn, "dblclick", 
+                                 this.doubleClick.bindAsEventListener(btn));
         btn.action = id;
         btn.map = this.map;
         btn.slideFactor = this.slideFactor;