--- a/Applications/StoneWebViewer/WebApplication/index.html	Mon Nov 16 22:17:01 2020 +0100
+++ b/Applications/StoneWebViewer/WebApplication/index.html	Tue Nov 17 09:32:40 2020 +0100
@@ -616,7 +616,8 @@
         <div v-bind:id="prefix + '-container'"
              style="position: absolute; left: 0; top: 0; width:100%;height:100%;overflow:auto;line-height: 0px;">
           <canvas v-bind:id="prefix + '-canvas'"
-                  style="position: absolute; top:0px; left:0px;"></canvas>
+                  style="position: absolute; top:0px; left:0px;"
+                  oncontextmenu="return false"></canvas>
         </div>
 
         <div class="wv-overlay">
@@ -645,8 +646,6 @@
     <script src="js/axios.min.js"></script>
     <script src="js/pdf.js"></script>
     
-    <script src="ua-parser.js"></script>
-    
     <script src="stone.js"></script>
     <script src="pdf-viewer.js"></script>   <!-- Must be before inclusion of "app.js" -->
     <script src="app.js"></script>