From 064477c47d9f48a41b086e09811bed8e0b0a7dea Mon Sep 17 00:00:00 2001
From: Jack Lukic <jacklukic@gmail.com>
Date: Tue, 7 Mar 2017 14:06:41 -0500
Subject: [PATCH] Fix math on scroll context

---
 src/definitions/behaviors/visibility.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/definitions/behaviors/visibility.js b/src/definitions/behaviors/visibility.js
index 804fee928..12f4dfe62 100644
--- a/src/definitions/behaviors/visibility.js
+++ b/src/definitions/behaviors/visibility.js
@@ -887,10 +887,10 @@ $.fn.visibility = function(parameters) {
             element.height        = $module.outerHeight();
             // compensate for scroll in context
             if(module.is.verticallyScrollableContext()) {
-              element.offset.top += $context.scrollTop();
+              element.offset.top += $context.scrollTop() - $context.offset().top;
             }
             if(module.is.horizontallyScrollableContext()) {
-              element.offset.left += $context.scrollLeft();
+              element.offset.left += $context.scrollLeft - $context.offset().left;
             }
             // store
             module.cache.element = element;