anchor.diff:                  <div class="label">Activity</div>
                   <div class="value">${scheduledActivity.activity.name}</div>
               </div>
  +            <c:set var="count" value="${count + 1}"/>
               <c:if test="${not empty scheduledActivity.activity.description}">
  -                <c:set var="count" value="${count + 1}"/>
                   <div class="row ${commons:parity(count)}">
                       <div class="label">Description</div>
                       <div class="value">${scheduledActivity.activity.description}</div>
                   </div>
  +                <c:set var="count" value="${count + 1}"/>
               </c:if>
  -            <c:set var="count" value="${count + 1}"/>
               <div class="row ${commons:parity(count)}">
                   <div class="label">Code</div>
                   <div class="value">${scheduledActivity.activity.code}</div>
               </div>
               <c:set var="count" value="${count + 1}"/>
  -            <div class="row ${commons:parity(count)}">
  -                <div class="label">Details</div>
  -                <div class="value">${scheduledActivity.details}</div>
  -            </div>
  -            <c:set var="count" value="${count + 1}"/>
  +            <c:if test="${not empty scheduledActivity.details}">
  +                <div class="row ${commons:parity(count)}">
  +                    <div class="label">Details</div>
  +                    <div class="value">${scheduledActivity.details}</div>
  +                </div>
  +                <c:set var="count" value="${count + 1}"/>
  +            </c:if>
               <c:if test="${not empty scheduledActivity.plannedActivity.condition}">
                   <div class="row ${commons:parity(count)}">
                       <div class="label">Condition</div>
  
positive.code:             margin-left: 12em;
          }
      </style>
      <tags:javascriptLink name="scheduled-activity"/>
      <script type="text/javascript">
          function registerStateHistoryControl() {
              Event.observe("show-history-control", "click", function(e) {
  
negative.code:                         </form:select>
                      </label>
                      <label id="new-date-input-group">Date <laf:dateInput path="newDate"/></label>
                      <label id="new-reason-input-group">Why? <form:input path="newReason"/></label>
                  </div>
              </div>
  