diff --git a/mozilla/widget/src/xlib/Makefile.in b/mozilla/widget/src/xlib/Makefile.in
index 23bfd8ecc3f..a10a846d4d5 100644
--- a/mozilla/widget/src/xlib/Makefile.in
+++ b/mozilla/widget/src/xlib/Makefile.in
@@ -66,6 +66,7 @@ CPPSRCS=\
 	nsWidget.cpp \
 	nsWidgetFactory.cpp \
 	nsWindow.cpp \
+	nsXUtils.cpp \
 	$(NULL)
 
 TARGETS = $(LIBRARY)
diff --git a/mozilla/widget/src/xlib/nsXUtils.cpp b/mozilla/widget/src/xlib/nsXUtils.cpp
new file mode 100644
index 00000000000..84f820c9f30
--- /dev/null
+++ b/mozilla/widget/src/xlib/nsXUtils.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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.
+ */
+
+#include "nsXUtils.h"
+
+#include <unistd.h>
+#include <string.h>
+
+//////////////////////////////////////////////////////////////////
+/* static */ void
+nsXUtils::FlashWindow(Display *     display,
+                      Window        window,
+                      unsigned int  times,    /* Number of times to flash */
+                      unsigned long interval) /* Interval between flashes */
+{
+	Window       root_window;
+	Window       child_window;
+	GC           gc;
+	int          x;
+	int          y;
+	unsigned int width;
+	unsigned int height;
+	unsigned int border_width;
+	unsigned int depth;
+	int          root_x;
+	int          root_y;
+	unsigned int i;
+
+	XGCValues    gcv;
+
+	XGetGeometry(display,
+				 window,
+				 &root_window,
+				 &x,
+				 &y,
+				 &width,
+				 &height,
+				 &border_width,
+				 &depth);
+
+	XTranslateCoordinates(display, 
+						  window,
+						  root_window, 
+						  0, 
+						  0,
+						  &root_x,
+						  &root_y,
+						  &child_window);
+
+    memset(&gcv, 0, sizeof(XGCValues));
+
+	gcv.function = GXxor;
+	gcv.foreground = WhitePixel(display, DefaultScreen(display));
+	gcv.subwindow_mode = IncludeInferiors;
+
+	if (gcv.foreground == 0)
+		gcv.foreground = 1;
+
+	gc = XCreateGC(display,
+				   root_window,
+				   GCFunction | GCForeground | GCSubwindowMode, 
+				   &gcv);
+
+	XGrabServer(display);
+
+	for (i = 0; i < times; i++)
+	{
+		XFillRectangle(display,
+					   root_window,
+					   gc,
+					   root_x,
+					   root_y,
+					   width,
+					   height);
+		
+		XSync(display, False);
+
+		usleep(interval);
+	}
+							
+		
+	XFreeGC(display, gc);  
+
+	XUngrabServer(display);
+}
+/*****************************************************************/
diff --git a/mozilla/widget/src/xlib/nsXUtils.h b/mozilla/widget/src/xlib/nsXUtils.h
new file mode 100644
index 00000000000..13b57a86d34
--- /dev/null
+++ b/mozilla/widget/src/xlib/nsXUtils.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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.
+ */
+
+#ifndef __nsXUtils_h
+#define __nsXUtils_h
+
+#include <X11/Xlib.h>
+
+struct nsXUtils
+{
+  static void FlashWindow(Display *     display,
+                          Window        window,
+                          unsigned int  times,  /* Number of times to flash */
+                          unsigned long interval); /* Interval between flashes */
+};
+
+#endif  // __nsXUtils_h