add Opera detect

app/pub/scripts/klanviewer.js

@@ -149,6 +149,8 @@ function setzoom( cname, cvalue, exdays = 30 ) {
 
 function startpdfviewer(newcurr){
 
+  var embed = false;
+
   pdcurr =  getzoom('pdcurr');
   
   if (pdcurr == newcurr){
@@ -165,7 +167,20 @@ function startpdfviewer(newcurr){
 
   var detect = new MobileDetect(window.navigator.userAgent);
 
-  if (detect.phone()){
+  if (category == 3 || detect.phone()){
+    embed = false;
+  }  
+
+  if(navigator.userAgent.indexOf("Opera")){
+    embed = true;
+  }
+  
+
+  if (embed){    
+    document.getElementById(pdfcanvas).innerHTML = '<embed src="'+ url +'" width="100%" type="application/pdf" style="height: 100vh;">';  
+  }  
+
+  else {
 
     var canv = document.createElement('canvas');
     canv.id = 'the-pdf';
@@ -177,12 +192,6 @@ function startpdfviewer(newcurr){
     });
    
   }
-  else {
-
-    document.getElementById(pdfcanvas).innerHTML = '<embed src="'+ url +'" width="100%" type="application/pdf" style="height: 100vh;">'; 
-    
-  }
-