From cf487615cf3a4986b0ba3464c99e9b8a55971fde Mon Sep 17 00:00:00 2001
From: notmasteryet <async.processingjs@yahoo.com>
Date: Mon, 29 Aug 2011 21:11:46 -0500
Subject: [PATCH] Fixing back-button/NaN-hash issue

---
 web/viewer.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/web/viewer.js b/web/viewer.js
index 243afb7e5..809bd5dda 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -42,7 +42,7 @@ var PDFView = {
   set page(val) {
     var pages = this.pages;
     var input = document.getElementById('pageNumber');
-    if (val <= 0 || val > pages.length) {
+    if (!(0 < val && val <= pages.length)) {
       input.value = this.page;
       return;
     }
@@ -58,7 +58,7 @@ var PDFView = {
   },
 
   get page() {
-    return parseInt(document.location.hash.substring(1));
+    return parseInt(document.location.hash.substring(1)) || 1;
   },
 
   open: function(url, scale) {