--- webbrowser.py.orig	2013-01-02 21:46:38.000000000 +0400
+++ webbrowser.py	2016-07-16 13:34:49.746799021 +0300
@@ -294,6 +294,34 @@
 Netscape = Mozilla
 
 
+class NewFirefox(Mozilla):
+    """Launcher class for Mozilla Firefox browsers with versions >= 36.0"""
+
+    remote_args = ['%action', '%s']
+    remote_action = ""
+    remote_action_newwin = "-new-window"
+    remote_action_newtab = "-new-tab"
+
+
+def _get_firefox_major_version():
+    try:
+        firefox_proc = subprocess.Popen(['firefox', '--version'],
+                                        stdout=subprocess.PIPE,
+                                        stderr=subprocess.STDOUT)
+        firefox_proc.wait()
+        firefox_ver = firefox_proc.stdout.readline()
+        firefox_proc.stdout.read()
+        firefox_proc.stdout.close()
+    except OSError:
+        return -1
+
+    # firefox_ver is something like "Mozilla Firefox 40.0"
+    try:
+        return int(firefox_ver.split()[-1].split(b'.')[0])
+    except:
+        return -1
+
+
 class Galeon(UnixBrowser):
     """Launcher class for Galeon/Epiphany browsers."""
 
@@ -466,7 +494,11 @@
                     "iceweasel", "iceape",
                     "seamonkey", "mozilla", "netscape"):
         if _iscommand(browser):
-            register(browser, None, Mozilla(browser))
+            if browser == "firefox" and _get_firefox_major_version() >= 36:
+                klass = NewFirefox
+            else:
+                klass = Mozilla
+            register(browser, None, klass(browser))
 
     # Konqueror/kfm, the KDE browser.
     if _iscommand("kfm"):