From 59bac43afb725c0960d6a40c6847489f3c09a43c Mon Sep 17 00:00:00 2001
From: ccd0 <admin@containerchan.org>
Date: Thu, 2 Jun 2016 00:31:32 -0700
Subject: [PATCH] Fix script running inside ad iframes.

---
 src/main/Main.coffee | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/Main.coffee b/src/main/Main.coffee
index 2975579a6..8ccc9948b 100644
--- a/src/main/Main.coffee
+++ b/src/main/Main.coffee
@@ -3,6 +3,9 @@ Main =
     # XXX Work around Pale Moon / old Firefox + GM 1.15 bug where script runs in iframe with wrong window.location.
     return if d.body and not $ 'title', d.head
 
+    # Don't run inside ad iframes.
+    return if window.frameElement and window.frameElement.src is ''
+
     # XXX dwb userscripts extension reloads scripts run at document-start when replaceState/pushState is called.
     return if window['<%= meta.name %> antidup']
     window['<%= meta.name %> antidup'] = true