From 5fd1359b9c6db0d7ee2b513f7e512decfdc8f66e Mon Sep 17 00:00:00 2001
From: "hyatt%netscape.com"
 <hyatt%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Wed, 9 Feb 2000 09:39:15 +0000
Subject: [PATCH] Fix for bug #26381

git-svn-id: svn://10.0.0.236/trunk@60223 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/content/xbl/src/nsXBLEventHandler.cpp | 4 ++++
 mozilla/layout/xbl/src/nsXBLEventHandler.cpp  | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/mozilla/content/xbl/src/nsXBLEventHandler.cpp b/mozilla/content/xbl/src/nsXBLEventHandler.cpp
index f83fed68206..b5f4bc479ac 100644
--- a/mozilla/content/xbl/src/nsXBLEventHandler.cpp
+++ b/mozilla/content/xbl/src/nsXBLEventHandler.cpp
@@ -307,6 +307,10 @@ nsXBLEventHandler::MouseEventMatched(nsIDOMUIEvent* aMouseEvent)
 NS_IMETHODIMP
 nsXBLEventHandler::ExecuteHandler(const nsString& aEventName, nsIDOMEvent* aEvent)
 {
+  // We are the default action for this command.
+  // Stop any other default action from executing.
+  aEvent->PreventDefault();
+
   // This is a special-case optimization to make command handling fast.
   // It isn't really a part of XBL, but it helps speed things up.
   nsAutoString command;
diff --git a/mozilla/layout/xbl/src/nsXBLEventHandler.cpp b/mozilla/layout/xbl/src/nsXBLEventHandler.cpp
index f83fed68206..b5f4bc479ac 100644
--- a/mozilla/layout/xbl/src/nsXBLEventHandler.cpp
+++ b/mozilla/layout/xbl/src/nsXBLEventHandler.cpp
@@ -307,6 +307,10 @@ nsXBLEventHandler::MouseEventMatched(nsIDOMUIEvent* aMouseEvent)
 NS_IMETHODIMP
 nsXBLEventHandler::ExecuteHandler(const nsString& aEventName, nsIDOMEvent* aEvent)
 {
+  // We are the default action for this command.
+  // Stop any other default action from executing.
+  aEvent->PreventDefault();
+
   // This is a special-case optimization to make command handling fast.
   // It isn't really a part of XBL, but it helps speed things up.
   nsAutoString command;