From 03c3031cb4de22f2cd8070547c2bb8085d435c69 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Wed, 10 Sep 2014 11:28:29 +0200
Subject: [PATCH] cleanup classes when backgrounds are synced

---
 js/reveal.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/js/reveal.js b/js/reveal.js
index 3cc1cae..a0b92ac 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -716,6 +716,10 @@
 
 		container.appendChild( element );
 
+		// If backgrounds are being recreated, clear old classes
+		slide.classList.remove( 'has-dark-background' );
+		slide.classList.remove( 'has-light-background' );
+
 		// If this slide has a background color, add a class that
 		// signals if it is light or dark. If the slide has no background
 		// color, no class will be set
-- 
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