diff --git a/plugin/oji/MRJ/plugin/Source/jGNE.cpp b/plugin/oji/MRJ/plugin/Source/jGNE.cpp
new file mode 100644
index 000000000000..e91ab0d87d65
--- /dev/null
+++ b/plugin/oji/MRJ/plugin/Source/jGNE.cpp
@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+	jGNE.cpp
+	
+	Provides a generalized jGNE filtering service.
+	
+	by Patrick C. Beard.
+ */
+
+#include "jGNE.h"
+
+#include <MixedMode.h>
+#include <LowMem.h>
+
+static void GNEFilter(EventRecord *event, Boolean* result);
+
+static RoutineDescriptor theGNEFilterUPP = BUILD_ROUTINE_DESCRIPTOR(uppGetNextEventFilterProcInfo, GNEFilter);
+static GetNextEventFilterUPP theGetNextEventFilterUPP = NULL;
+static EventFilterProcPtr  theEventFilter = NULL;
+
+OSStatus InstallEventFilter(EventFilterProcPtr filter)
+{
+	theEventFilter = filter;
+
+	// get previous event filter routine.
+	theGetNextEventFilterUPP = LMGetGNEFilter();
+	LMSetGNEFilter(&theGNEFilterUPP);
+	
+	return noErr;
+}
+
+OSStatus RemoveEventFilter()
+{
+	// should really check to see if somebody else has installed a filter proc as well.
+	LMSetGNEFilter(theGetNextEventFilterUPP);
+	theGetNextEventFilterUPP = NULL;
+	theEventFilter = NULL;
+	return noErr;
+}
+
+static void GNEFilter(EventRecord *event, Boolean* result)
+{
+	// call next filter in chain first.
+	if (theGetNextEventFilterUPP)
+		CallGetNextEventFilterProc(theGetNextEventFilterUPP, event, result);
+
+	// now, let the filter proc have a crack at the event.
+	if (*result)
+		*result = !theEventFilter(event);
+}
diff --git a/plugin/oji/MRJ/plugin/Source/jGNE.h b/plugin/oji/MRJ/plugin/Source/jGNE.h
new file mode 100644
index 000000000000..cf415642ad4b
--- /dev/null
+++ b/plugin/oji/MRJ/plugin/Source/jGNE.h
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#pragma once
+
+/*
+	jGNE.h
+	
+	Provides a generalized jGNE filtering service.
+	
+	by Patrick C. Beard.
+ */
+
+#ifndef __EVENTS__
+#include <Events.h>
+#endif
+
+typedef Boolean (*EventFilterProcPtr) (EventRecord* event);
+
+OSStatus InstallEventFilter(EventFilterProcPtr filter);
+OSStatus RemoveEventFilter();