From e8edeab641e97d213b95526183d1b61edd0dab69 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Tue, 14 Dec 2021 14:22:11 -0500
Subject: [PATCH] parseInt prevEventId and nextEventID to be sure that our
 tests for != 0 work.  Also don't go to previous event if prevEventId
 ==0.Maybe Fixes #3390

---
 web/skins/classic/views/js/event.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/web/skins/classic/views/js/event.js b/web/skins/classic/views/js/event.js
index b252c292c..04bf66b7e 100644
--- a/web/skins/classic/views/js/event.js
+++ b/web/skins/classic/views/js/event.js
@@ -446,8 +446,10 @@ function streamFastRev(action) {
 function streamPrev(action) {
   if (action) {
     $j(".vjsMessage").remove();
-    location.replace(thisUrl + '?view=event&eid=' + prevEventId + filterQuery + sortQuery);
-    return;
+    if (prevEventId != 0) {
+      location.replace(thisUrl + '?view=event&eid=' + prevEventId + filterQuery + sortQuery);
+      return;
+    }
 
     /* Ideally I'd like to get back to this style
     if ( vid && PrevEventDefVideoPath.indexOf("view_video") > 0 ) {
@@ -619,8 +621,8 @@ function getNearEventsResponse(respObj, respText) {
   if (checkStreamForErrors('getNearEventsResponse', respObj)) {
     return;
   }
-  prevEventId = respObj.nearevents.PrevEventId;
-  nextEventId = respObj.nearevents.NextEventId;
+  prevEventId = parseInt(respObj.nearevents.PrevEventId);
+  nextEventId = parseInt(respObj.nearevents.NextEventId);
   prevEventStartTime = Date.parse(respObj.nearevents.PrevEventStartTime);
   nextEventStartTime = Date.parse(respObj.nearevents.NextEventStartTime);
   PrevEventDefVideoPath = respObj.nearevents.PrevEventDefVideoPath;