From 7cd504974a4056a6a64b5742658a59601ac18db5 Mon Sep 17 00:00:00 2001
From: Rafael Tavares Juliani <professor@rafaeljuliani.com>
Date: Sat, 21 Oct 2023 04:35:09 -0300
Subject: [PATCH] If no divPageNavigation

---
 leitor-web.js | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/leitor-web.js b/leitor-web.js
index 0c81c79..62731cb 100644
--- a/leitor-web.js
+++ b/leitor-web.js
@@ -109,7 +109,7 @@ window.onload = (event) => {
 
    
 
-          if (luz_apagada && !modo_escuro) {
+          if (luz_apagada && !modo_escuro && divPageNavigation) {
 
             divPageNavigation.style.background = tipo_de_papel[obj[1]];
 
@@ -399,7 +399,7 @@ window.onload = (event) => {
 
     salvarOpcoesUsuario('papel', indiceTipoPapel);
 
-    if (luz_apagada){
+    if (luz_apagada && divPageNavigation){
 
       divPageNavigation.style.background = tipo_de_papel[indiceTipoPapel];
 
@@ -413,7 +413,12 @@ window.onload = (event) => {
     
       quartoContent.classList.remove('luz_apagada');
 
-      divPageNavigation.style.removeProperty('background');
+      if(divPageNavigation){
+
+        divPageNavigation.style.removeProperty('background');
+
+      }
+      
 
       sidebar.style.removeProperty('color')    
       sidebar.classList.remove('luz_apagada');
@@ -445,7 +450,12 @@ window.onload = (event) => {
     
       quartoContent.classList.add('luz_apagada');
 
-      divPageNavigation.style.backgroundColor = tipo_de_papel[indiceTipoPapel];
+      if(divPageNavigation){
+
+        divPageNavigation.style.backgroundColor = tipo_de_papel[indiceTipoPapel];
+
+      }
+      
 
       papel.style.background = tipo_de_papel[indiceTipoPapel];