From 49adb99ae92ea7a22f4b4dd66e140fb3ffe2c543 Mon Sep 17 00:00:00 2001
From: ccd0 <admin@containerchan.org>
Date: Sun, 5 Jun 2016 02:56:53 -0700
Subject: [PATCH] Don't try to use getElementById on non-document.

---
 src/Monitoring/ReplyPruning.coffee | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Monitoring/ReplyPruning.coffee b/src/Monitoring/ReplyPruning.coffee
index 87a67bf83..3c9524f73 100644
--- a/src/Monitoring/ReplyPruning.coffee
+++ b/src/Monitoring/ReplyPruning.coffee
@@ -50,7 +50,7 @@ ReplyPruning =
     ReplyPruning.active = @checked
 
   showIfHidden: (id) ->
-    if ReplyPruning.container?.getElementById id
+    if ReplyPruning.container and $("##{id}", ReplyPruning.container)
       ReplyPruning.inputs.enabled.checked = false
       $.event 'change', null, ReplyPruning.inputs.enabled