From 558a80eb961be9021aebe22d9f86f4d5e48baef7 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Tue, 24 Jul 2018 17:36:11 +0200
Subject: [PATCH] fix #1948 @0.25

---
 js/libs/fluidbook/fluidbook.js | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/js/libs/fluidbook/fluidbook.js b/js/libs/fluidbook/fluidbook.js
index 42dcda63..6aa245ec 100644
--- a/js/libs/fluidbook/fluidbook.js
+++ b/js/libs/fluidbook/fluidbook.js
@@ -608,30 +608,35 @@ Fluidbook.prototype = {
             speed = 0;
         }
 
+        var max = this.getMaxPage() % 2 == 1 ? this.getMaxPage() - 1 : this.getMaxPage();
+        var next = page < max;
+        var previous = (page > 1);
+
         if (Modernizr.csstransitions) {
-            if (page <= 1) {
-                $("#previous").addClass('hidden');
+            if (next) {
+                $("#next").removeClass('hidden');
             } else {
-                $("#previous").removeClass('hidden');
+                $("#next").addClass('hidden');
             }
 
-            if (page >= this.getMaxPage()) {
-                $("#next").addClass('hidden');
+            if (previous) {
+                $("#previous").removeClass('hidden');
             } else {
-                $("#next").removeClass('hidden');
+                $("#previous").addClass('hidden');
             }
         } else {
             $("#previous,#next").removeClass('hidden');
-            if (page <= 1) {
-                $("#previous:visible").fadeOut(speed);
-            } else {
+
+            if (previous) {
                 $("#previous:hidden").fadeIn(speed);
+            } else {
+                $("#previous:visible").fadeOut(speed);
             }
 
-            if (page >= this.getMaxPage()) {
-                $("#next:visible").fadeOut(speed);
-            } else {
+            if (next) {
                 $("#next:hidden").fadeIn(speed);
+            } else {
+                $("#next:visible").fadeOut(speed);
             }
         }
     },
-- 
2.39.5