From b0376a1aa6e49c9a1b8ba0d971bc9fc90851ce24 Mon Sep 17 00:00:00 2001
From: Inkbug <inkbug@inkbug.(none)>
Date: Tue, 2 Apr 2013 21:30:03 +0300
Subject: [PATCH] Fixing Issue 2998 - Replacing `!!window.frameElement` with
 `window.parent !== window`

---
 web/viewer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web/viewer.js b/web/viewer.js
index 4278692e1..2204870fd 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -886,7 +886,7 @@ var PDFView = {
                   doc.webkitRequestFullScreen;
 
     // Disable fullscreen button if we're in an iframe
-    if (!!window.frameElement)
+    if (window.parent !== window)
       support = false;
 
     Object.defineProperty(this, 'supportsFullScreen', { value: support,