From a9a4b93980c06225bf97b67b9fa26e755bf91b93 Mon Sep 17 00:00:00 2001
From: Jang Jun <abc123@foxmail.com>
Date: Tue, 20 Dec 2016 16:43:40 +0800
Subject: [PATCH] Fix error when use scrollFn

---
 Sortable.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Sortable.js b/Sortable.js
index 720e56d..2cab904 100644
--- a/Sortable.js
+++ b/Sortable.js
@@ -92,7 +92,8 @@
 		_autoScroll = _throttle(function (/**Event*/evt, /**Object*/options, /**HTMLElement*/rootEl) {
 			// Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
 			if (rootEl && options.scroll) {
-				var el,
+				var _this = rootEl[expando],
+					el,
 					rect,
 					sens = options.scrollSensitivity,
 					speed = options.scrollSpeed,