anchor.diff:                                      </form:select>
                                       <form:errors path="ratio" cssClass="help-block"/>
                                   </div>
  -                            </div><!-- /col-lg-4 -->
  +                            </div>
  +                            <!-- /col-lg-4 -->
  +
  +                            <%-- Choose alorithm --%>
                               <c:set var="algoOnError">
                                   <form:errors path="algo"/>
                               </c:set>
  
positive.code:                                     </form:select>
                                  </div>
                              </div>
                              <c:set var="ratioOnError">
                                  <form:errors path="ratio"/>
                              </c:set>
  
negative.code:                             <c:url value="result.html"></c:url>
                          </c:set>
                          <form:form class="form-horizontal" name="formulaire" commandName="colorModel" method="GET" role="form" action="${actionUrl}">
  
                              <%-- Foregound --%>
                              <c:set var="foregroundOnError">
                                  <form:errors path="foreground"/>
                              </c:set>
  