1 files changed, 26 insertions, 0 deletions
diff --git a/dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl b/dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl
new file mode 100644
index 000000000..3fe0451db
--- /dev/null
+++ b/dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl
@@ -0,0 +1,26 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+/**
+ * The nsIDOMBeforeUnloadEvent interface is the interface for events
+ * sent to handlers of the "beforeunload" event. This event is
+ * non-standard. Interface derived from Microsoft IE's event
+ * implementation.
+ *
+ * http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/events.asp
+ *
+ */
+
+[builtinclass, uuid(26c83933-a5a4-455e-8c46-69fa24dfa991)]
+interface nsIDOMBeforeUnloadEvent : nsISupports
+{
+  /**
+   * Attribute used to pass back a return value from a beforeunload
+   * handler
+   */
+           attribute DOMString          returnValue;
+};