anchor.diff:  						<td><joda:format value="${item.comienzoPublicacion}" pattern="yyyy/MM/dd HH:mm" /></td>
   						<td><joda:format value="${item.finPublicacion}" pattern="yyyy/MM/dd HH:mm" /></td>						
   						
  -						<td>
  -							<img id="${item.id}" class="botonTweet" alt="Tweet" src="<spring:url value="/static/img/twitter.png" />" width="30"> 
  -						</td>						
  -						
  -						<td><a class="btn btn-success"
  -							href="<spring:url value="/avisos/{id}"><spring:param name="id" value="${item.id}" /></spring:url>">
  -								<span class="glyphicon glyphicon-edit"></span>
  -						</a>
  -						<form:form action="${deleteAction}/${item.id}" method="DELETE">
  -							<!-- Botón eliminar -->
  -							<button type="button" class="btn btn-danger" data-toggle="modal"
  -								data-target=".bs-delete-modal-sm${item.id}">
  -								<span class="glyphicon glyphicon-remove"></span>
  -							</button> <!-- Popup de confirmación de eliminación -->
  -							<div class="modal fade bs-delete-modal-sm${item.id}"
  -								tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel"
  -								aria-hidden="true">
  -								<div class="modal-dialog modal-sm">
  -									<div class="modal-content">
  -										<div class="modal-header bg-primary">
  -											<button type="button" class="close" data-dismiss="modal"
  -												aria-hidden="true">&times;</button>
  -											<h4 class="modal-title" id="myModalLabel"><spring:message code="listado.acciones.eliminar.anuncio"></spring:message></h4>
  -										</div>										
  -										<div class="modal-body"><spring:message code="listado.acciones.eliminar.warning"></spring:message></div>
  -										<div class="modal-footer ">
  -											<button type="submit" class="btn btn-danger"><spring:message code="listado.acciones.eliminar">"${item.titulo}"?</spring:message></button>											
  -											<button type="button" class="btn btn-warning " data-dismiss="modal"><spring:message code="listado.acciones.cancelar"></spring:message></button>
  +						<sec:authorize access="isAuthenticated()">
  +							<td>
  +								<img id="${item.id}" class="botonTweet" alt="Tweet" src="<spring:url value="/static/img/twitter.png" />" width="30"> 
  +							</td>						
  +						</sec:authorize>
  +						
  +						<sec:authorize access="isAuthenticated()">
  +							<td><a class="btn btn-success"
  +								href="<spring:url value="/avisos/{id}"><spring:param name="id" value="${item.id}" /></spring:url>">
  +									<span class="glyphicon glyphicon-edit"></span>
  +							</a>
  +							<form:form action="${deleteAction}/${item.id}" method="DELETE">
  +								<!-- Botón eliminar -->
  +								<button type="button" class="btn btn-danger" data-toggle="modal"
  +									data-target=".bs-delete-modal-sm${item.id}">
  +									<span class="glyphicon glyphicon-remove"></span>
  +								</button> <!-- Popup de confirmación de eliminación -->
  +								<div class="modal fade bs-delete-modal-sm${item.id}"
  +									tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel"
  +									aria-hidden="true">
  +									<div class="modal-dialog modal-sm">
  +										<div class="modal-content">
  +											<div class="modal-header bg-primary">
  +												<button type="button" class="close" data-dismiss="modal"
  +													aria-hidden="true">&times;</button>
  +												<h4 class="modal-title" id="myModalLabel"><spring:message code="listado.acciones.eliminar.anuncio"></spring:message></h4>
  +											</div>										
  +											<div class="modal-body"><spring:message code="listado.acciones.eliminar.warning"></spring:message></div>
  +											<div class="modal-footer ">
  +												<button type="submit" class="btn btn-danger"><spring:message code="listado.acciones.eliminar">"${item.titulo}"?</spring:message></button>											
  +												<button type="button" class="btn btn-warning " data-dismiss="modal"><spring:message code="listado.acciones.cancelar"></spring:message></button>
  +											</div>
   										</div>
   									</div>
  -								</div>
  -							</div> <!-- Fin de  Popup de confirmación de eliminación -->
  -						</form:form>
  -						</td>
  +								</div> <!-- Fin de  Popup de confirmación de eliminación -->
  +							</form:form>
  +							</td>
  +						</sec:authorize>
   					</tr>
   				</div>
   			</div>
  
positive.code: <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
  <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
  <%@ taglib prefix="joda" uri="http://www.joda.org/joda/time/tags" %>
  
  <meta name="_csrf" content="${_csrf.token}" />
  <!-- default header name is X-CSRF-TOKEN -->
  
negative.code: 			<div class="col-sm-6 col-md-3" style="padding-bottom: 15px">
  				<div class="caption">
  					<tr>
  						<td>
  							<c:if test="${item.prioridadAviso.description eq 'Importante'}">
  								<span class=" glyphicon glyphicon-exclamation-sign"></span>
  							</c:if>
  						</td>
  						<td>
  							<!-- Tipo de destino: Post, URL o archivo adjunto --> <c:choose>
  								<c:when test="${item.tipoAviso.name() eq 'POST'}">
  