From 3abafe1bbef1b0ada32c44747a24ebb1ade75e81 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Wed, 26 Apr 2017 19:13:37 +0200
Subject: [PATCH] done #1371 @0:15

---
 js/main.js | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/js/main.js b/js/main.js
index bd370d5d..a8beb3cb 100644
--- a/js/main.js
+++ b/js/main.js
@@ -491,11 +491,9 @@ function goNextPage(e) {
     if (fluidbook.help.isVisible()) {
         return;
     }
-    var y;
-    if (e.originalEvent.touches) {
-        var o = $(this).offset();
+    try {
         y = e.originalEvent.touches[0].pageY - o.top;
-    } else {
+    } catch (err) {
         y = e.offsetY == undefined ? e.originalEvent.layerY : e.offsetY;
     }
 
@@ -516,10 +514,9 @@ function goPreviousPage(e) {
         return;
     }
     var y;
-    if (e.originalEvent.touches) {
-        var o = $(this).offset();
+    try {
         y = e.originalEvent.touches[0].pageY - o.top;
-    } else {
+    } catch (err) {
         y = e.offsetY == undefined ? e.originalEvent.layerY : e.offsetY;
     }
     if (y < 65) {
-- 
2.39.5