diff --git a/app/pub/scripts/klanviewer.js b/app/pub/scripts/klanviewer.js
index 93aaa13..b94fc24 100644
--- a/app/pub/scripts/klanviewer.js
+++ b/app/pub/scripts/klanviewer.js
@@ -166,6 +166,7 @@ function startpdfviewer(newcurr){
   }
 
   var detect = new MobileDetect(window.navigator.userAgent);
+  var isOpera = window.opera | window.opr | ( navigator.userAgent.indexOf(' OPR/') > -1 ) | ( navigator.userAgent.indexOf(' Coast/') > -1 ) | ( navigator.userAgent.indexOf(' OPiOS/') > -1 );
 
   if (category == 1){
     embed = false;
@@ -175,10 +176,9 @@ function startpdfviewer(newcurr){
     embed = false;
   }  
 
-  if(navigator.userAgent.indexOf("Opera")){
+  if(isOpera){
     embed = true;
   }
-  
 
   if (embed){    
     document.getElementById(pdfcanvas).innerHTML = '<embed src="'+ url +'" width="100%" type="application/pdf" style="height: 100vh;">';  
diff --git a/app/views/layout.phtml b/app/views/layout.phtml
index 708b610..e3f81ac 100644
--- a/app/views/layout.phtml
+++ b/app/views/layout.phtml
@@ -4,7 +4,7 @@
   <//base href="<?=SITE?>">
   <script src="/pub/scripts/pdf.min.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/mobile-detect/1.4.4/mobile-detect.min.js"></script>
-  <script src="/pub/scripts/klanviewer.js?ver=14"></script>
+  <script src="/pub/scripts/klanviewer.js?ver=19"></script>
   <link rel="stylesheet" type="text/css" href="/pub/css/an.css?ver=204">
   <link rel="icon" type="image/ico" href="https://argumenti.ru/favicon.ico">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">