anchor.diff:  				</button>
   			</p>
   			<p><canvas id="canvas" class="img-thumbnail"></canvas></p>
  +			<p>
  +			<button type="button" id="buttonCancel" class="btn btn-default" value="Démarrer" disabled="disabled" onclick="cancel()">
  +				Cancel
  +			</button>
  +			<button type="button" id="buttonSave" value="Sauvegarder" class="btn btn-success" disabled="disabled" onclick="save()">
  +				<span class="glyphicon glyphicon-camera"></span>
  +			</button>
  +			</p>
   		</div>
   	</div>
   </div>
  
positive.code: </div>
  
  
  <script type="text/javascript">//<![CDATA[
  "use strict";
  var video = document.getElementById('video');
  var canvas = document.getElementById('canvas');
  var videoStream = null;
  var preLog = document.getElementById('preLog');
  var stopButton = document.getElementById('buttonStop');
  var snapButton = document.getElementById('buttonSnap');
  var startButton = document.getElementById('buttonStart');
  
  function buttonState(b, s) {
  	if (b) b.disabled = s;
  
negative.code: 
  function start()
  {
  	saveButton.hide();
  	cancelButton.hide();
  
  	if ((typeof window === 'undefined') || (typeof navigator === 'undefined')) log('Cette page requiert un navigateur Web avec les objets window.* et navigator.* !');
  	else if (!(video && canvas)) log('Erreur de contexte HTML !');
  	else
  