From 69f3c69dc560ff159bd8ddb9725d1981596f76d5 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Wed, 15 Jun 2022 16:26:31 +0200
Subject: [PATCH] wip #4210 @0.25

---
 js/libs/fluidbook/fluidbook.slider.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/js/libs/fluidbook/fluidbook.slider.js b/js/libs/fluidbook/fluidbook.slider.js
index 4a9cfb10..c223c246 100644
--- a/js/libs/fluidbook/fluidbook.slider.js
+++ b/js/libs/fluidbook/fluidbook.slider.js
@@ -85,6 +85,9 @@ FluidbookSlider.prototype = {
     },
 
     hover: function (pageX) {
+        if (!$("#slider").length === 0) {
+            return;
+        }
         $("#slider").addClass('hover');
         var page = this.getPageByX(this.pageToSlider(pageX));
         this.updateThumb(page);
@@ -107,7 +110,11 @@ FluidbookSlider.prototype = {
     },
 
     pageToSlider: function (pageX) {
-        return pageX - $("#slider").offset().left;
+        try {
+            return pageX - $("#slider").offset().left;
+        } catch (e) {
+            return 1;
+        }
     },
 
     updatePageByCursorPosition: function (pos, gotoPage, updateCursor) {
-- 
2.39.5