anchor.diff:  <script type="text/javascript">
       <!--
   
  +    var checked = localStorage.getItem('alwaysUseNetid');
  +    <c:if test="${ param.error == null && param.logout == null }">
  +    if (checked) {
  +        window.location.replace("${pageContext.request.contextPath}/saml/login");
  +    }
  +    </c:if>
  +
       $(document).ready(function () {
           // select the appropriate field based on context
           $('#<c:out value="${ login_hint != null ? 'password' : 'username' }" />').focus();
  +
  +        var checkbox = $('#alwaysUseNetid');
  +        checkbox.attr('checked', checked);
  +        checkbox.change(function () {
  +            if (this.checked) {
  +                localStorage.setItem('alwaysUseNetid', true);
  +            } else {
  +                localStorage.removeItem('alwaysUseNetid');
  +            }
  +        });
       });
  -
       //-->
   </script>
   <o:topbar/>
  
positive.code:             <h2>Log in with TU Delft NetID</h2>
  
              <div><a href="${pageContext.request.contextPath}/saml/login" class="btn btn-info">
                  Login with TU Delft NetID
              </a></div>
          </div>
      </div>
  </div>
  
negative.code:                 </div>
                  <div>
                      <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}"/>
                      <input type="submit" class="btn" value="Log in" name="submit">
                  </div>
              </form>
          </div>
  