a

app/pub/scripts/anviewer.js

@@ -65,7 +65,7 @@ function pdfzoomin(){
 function pdfzoomout(){
 
     scale -= 0.25;
-    setzoom(scale);
+   setzoom(scale);
     renderPage();
 
 }
@@ -73,34 +73,41 @@ function pdfzoomout(){
 
 function getzoom(){
 
-  var cname = 'pdfscale';
+  var name = 'pdfscale';
     
-  var results = document.cookie.match ( '(^|;) ?' + cname + '=([^;]*)(;|$)' );
+  var results = document.cookie.match ( '(^|;) ?' + name + '=([^;]*)(;|$)' );
  
-  if ( results )
-    return ( unescape ( results[2] ) );
-  else
+  if ( results ){
+    return parseFloat(unescape(results[2]));
+  }  
+  else {
     return null;
+  }  
 
 }
 
 function setzoom( cvalue, exdays = 30 ) {
 
+    var cname = 'pdfscale';
+    
     var d = new Date();
     d.setTime(d.getTime() + (exdays*24*60*60*1000));
     
-    var cname = 'pdfscale';
-    document.cookie = cname + "=" + cvalue + "; expires=" + expires + "; path=/";
-    
-}
+   
+    var expires = "expires="+ d.toUTCString();
+    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
+
+  }
 
 
 function startpdfviewer(){
 
+    
     czoom = getzoom();
 
-    if (czoom !== null  ||  isNaN(czoom))
-        scale = czoom;
+   if (czoom != null)
+       scale = czoom; 
+
     
     pdfjsLib.getDocument(url).promise.then(function(pdfDoc_) {
         pdfDoc = pdfDoc_;