anchor.diff:  						<tbody>
   							<openmrs:forEachEncounter encounters="${model.patientEncounters}" sortBy="encounterDatetime" descending="true" var="enc" num="${model.num}">
   								<tr class="<c:choose><c:when test="${count % 2 == 0}">evenRow</c:when><c:otherwise>oddRow</c:otherwise></c:choose>">
  -									<td>
  +									<td class="hidden">
   										<%--  this column contains the encounter id and will be used for sorting in the dataTable's encounter edit column --%>
   										${enc.encounterId}
   									</td>
  
positive.code: 				{ "bVisible": false, "sType": "numeric" },
  				{ "bVisible": ${showEditLink}, "iDataSort": 0 }, // sort this column by using the previous invisible column for encounterIds,
  				{ "bVisible": ${showViewLink}, "iDataSort": 0 }, // sort this column by using the first invisible column for encounterIds,
              	{ "iDataSort": 3 }, // sort the date in this column by using the next invisible column for time in milliseconds
              	{ "bVisible": false, "sType": "numeric" },
              	null,
              	null,
  
negative.code: 									<td class="encounterDatetime">
  										<openmrs:formatDate date="${enc.encounterDatetime}" type="small" />
  									</td>
  									<td class="hidden">
  									<%--  this column contains milliseconds and will be used for sorting in the dataTable's encounterDatetime column --%>
  										<openmrs:formatDate date="${enc.encounterDatetime}" type="milliseconds" />
  									</td>
  