From 8658830fc5e5991965a0e5e574c1ab1e52431d5e Mon Sep 17 00:00:00 2001
From: Vadim Makeev <pepelsbey@gmail.com>
Date: Thu, 21 Jul 2011 14:53:09 +0400
Subject: [PATCH] progress availability check added

---
 scripts/script.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/script.js b/scripts/script.js
index 499dd6a..c2a0863 100755
--- a/scripts/script.js
+++ b/scripts/script.js
@@ -65,6 +65,7 @@
 	}
 
 	function updateProgress(slide_number) {
+		if (!progress) return;
 		progress.style.width = (100 / (slideList.length - 1) * normalizeSlideNumber(slide_number)).toFixed(2) + '%';
 	}