--- a/Applications/Samples/Web/simple-viewer.html	Tue Aug 28 11:09:37 2018 +0200
+++ b/Applications/Samples/Web/simple-viewer.html	Tue Aug 28 15:26:46 2018 +0200
@@ -17,6 +17,12 @@
     <canvas id="canvas" data-width-ratio="20" data-height-ratio="50"></canvas>
     <canvas id="canvas2" data-width-ratio="70" data-height-ratio="50"></canvas>
   </div>
+  <div>
+    <button id="tool1">tool1</button>
+    <button id="tool2">tool2</button>
+    <button id="pushBouton1">action1</button>
+    <button id="pushBouton2">action2</button>
+  </div>
   <script type="text/javascript" src="app-simple-viewer.js"></script>
 </body>