diff --git a/ChangeLog b/ChangeLog
index 2edbf9b59..a6e4c4621 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-06-08  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
+
+	* UI/WebServerResources/UIxAclEditor.js: (onAclLoadHandler) we
+	bind the "unload" event rather than "beforeunload", which does not
+	seem to work on IE.
+
 2010-06-07  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
 	* UI/WebServerResources/UIxAclEditor.js (onAclLoadHandler): add
diff --git a/UI/WebServerResources/UIxAclEditor.js b/UI/WebServerResources/UIxAclEditor.js
index a41b31d21..ecd76c4e7 100644
--- a/UI/WebServerResources/UIxAclEditor.js
+++ b/UI/WebServerResources/UIxAclEditor.js
@@ -209,7 +209,7 @@ function onAclLoadHandler() {
     AclEditor['userRightsHeight'] = window.opener.getUsersRightsWindowHeight();
     AclEditor['userRightsWidth'] = window.opener.getUsersRightsWindowWidth();
 
-    Event.observe(window, "beforeunload", onAclCloseHandler);
+    Event.observe(window, "unload", onAclCloseHandler);
 }
 
 function onAclCloseHandler(event) {