Index: bridge/lib/window.js
===================================================================
--- bridge/lib/window.js	(revision 22208)
+++ bridge/lib/window.js	(working copy)
@@ -89,4 +89,11 @@
     } : function(e) {
         listener(Ice.EventModel.Event.adaptToKeyEvent(e));
     };
-};
\ No newline at end of file
+};
+
+//***
+//clean up callback references
+window.onUnload(function() {
+    document.onkeypress = null;
+    document.onkeyup = null;
+});
\ No newline at end of file
Index: bridge/lib/logger.js
===================================================================
--- bridge/lib/logger.js	(revision 22208)
+++ bridge/lib/logger.js	(working copy)
@@ -130,24 +130,23 @@
     });
 
     This.WindowLogHandler = Object.subclass({
-        initialize: function(logger, parentWindow, lines, thresholdPriority) {
+        initialize: function(logger, lines, thresholdPriority) {
             this.lineOptions = [ 25, 50, 100, 200, 400 ];
             this.logger = logger;
             this.logger.handleWith(this);
-            this.parentWindow = parentWindow;
             this.lines = lines || this.lineOptions[3];
             this.thresholdPriority = thresholdPriority || This.Priority.DEBUG;
             this.categoryMatcher = /.*/;
             this.closeOnExit = true;
             this.toggle();
 
-            this.parentWindow.onKeyUp(function(e) {
+            window.onKeyUp(function(e) {
                 var key = e.keyCode();
                 if ((key == 20 || key == 84) && (e.isCtrlPressed() || e.isAltPressed()) && e.isShiftPressed()) {
                     this.enable();
                 }
             }.bind(this));
-            this.parentWindow.onUnload(function() {
+            window.onUnload(function() {
                 window.logger.info('page unloaded!');
                 this.disable();
             }.bind(this));
@@ -155,7 +154,7 @@
 
         enable: function() {
             try {
-                this.window = this.parentWindow.open('', 'log' + window.identifier, 'scrollbars=1,width=800,height=680');
+                this.window = window.open('', 'log' + window.identifier, 'scrollbars=1,width=800,height=680');
                 var windowDocument = this.window.document;
 
                 this.log = this.window.document.getElementById('log-window');
@@ -256,6 +255,7 @@
             this.logger.threshold(This.Priority.ERROR);
             this.handle = Function.NOOP;
             if (this.closeOnExit && this.window) this.window.close();
+            this.window = null;
         },
 
         toggle: function() {
Index: bridge/src/focus.js
===================================================================
--- bridge/src/focus.js	(revision 22208)
+++ bridge/src/focus.js	(working copy)
@@ -97,4 +97,14 @@
     window.onLoad(function() {
         This.captureFocusIn(document);
     });
+
+    //***
+    //clear registered callbacks to avoid memory leaks
+    window.onBeforeUnload(function() {
+        $enumerate(['select', 'input', 'button', 'a']).each(function(type) {
+            $enumerate(document.body.getElementsByTagName(type)).each(function(element) {
+                element.onfocus = null;
+            });
+        });
+    });
 });
Index: bridge/src/application.js
===================================================================
--- bridge/src/application.js	(revision 22208)
+++ bridge/src/application.js	(working copy)
@@ -31,7 +31,7 @@
  */
 
 window.logger = new Ice.Log.Logger([ 'window' ]);
-window.console && window.console.firebug ? new Ice.Log.FirebugLogHandler(window.logger) : new Ice.Log.WindowLogHandler(window.logger, window);
+window.console && window.console.firebug ? new Ice.Log.FirebugLogHandler(window.logger) : new Ice.Log.WindowLogHandler(window.logger);
 
 [ Ice.Community ].as(function(This) {
     var registerSession = function(sessionID) {
@@ -150,9 +150,13 @@
                              new Ice.Connection.SyncConnection(logger, configuration.connection, parameters) :
                              new This.Connection.AsyncConnection(logger, sessionID, viewID, configuration.connection, parameters, commandDispatcher);
             var dispose = function() {
-                dispose = Function.NOOP;
-                connection.shutdown();
-                documentSynchronizer.shutdown();
+                try {
+                    dispose = Function.NOOP;
+                    connection.shutdown();
+                    documentSynchronizer.shutdown();
+                } finally {
+                    container.bridge = null;
+                }
             };
 
             var sessionExpiredListeners = [];