anchor.diff:  <tr>
     <td colspan="3" align="left">
         <hr noshade size="1" width="100%">
  +
  +      <input id="addArm" type="button" value="Add Arm" onclick="$('h-PAGE.ROW.INDEX').show(); javascript:RowManager.addRow(RowManager.getNestedRowInserter(genericEpochRowInserterProps,PAGE.ROW.INDEX));" />
  +      <br />
  +
     <table id="arm" class="tablecontent">
  -      <tr>
  +      <tr id="h-PAGE.ROW.INDEX" style="display:none;">
             <th><span class="required-indicator">Arm</span><tags:hoverHint id="study.arm.name-PAGE.ROW.INDEX" keyProp="study.arm.name"/></th>
             <th>Description<tags:hoverHint id="study.arm.description-PAGE.ROW.INDEX" keyProp="study.arm.description"/></th>
             <th>Accrual Ceiling<tags:hoverHint id="study.arm.targetAccrualNumber-PAGE.ROW.INDEX" keyProp="study.arm.targetAccrualNumber"/></th>
  -          <th><input id="addArm" type="button" value="Add Arm" onclick="javascript:RowManager.addRow(RowManager.getNestedRowInserter(genericEpochRowInserterProps,PAGE.ROW.INDEX));" /></th>
  +          <th></th>
         </tr>
     </table>
     </td>
  
positive.code: <tr>
    <td colspan="3" align="left">
        <hr noshade size="1" width="100%">
    <table id="arm" class="tablecontent">
        <tr>
            <th><span class="required-indicator">Arm</span><tags:hoverHint id="study.arm.name-PAGE.ROW.INDEX" keyProp="study.arm.name"/></th>
            <th>Description<tags:hoverHint id="study.arm.description-PAGE.ROW.INDEX" keyProp="study.arm.description"/></th>
            <th>Accrual Ceiling<tags:hoverHint id="study.arm.targetAccrualNumber-PAGE.ROW.INDEX" keyProp="study.arm.targetAccrualNumber"/></th>
            <th><input id="addArm" type="button" value="Add Arm" onclick="javascript:RowManager.addRow(RowManager.getNestedRowInserter(genericEpochRowInserterProps,PAGE.ROW.INDEX));" /></th>
        </tr>
    </table>
    </td>
  
negative.code: </tr>
  
  <c:if test="${command.epochs[treatmentEpochCount.index].displayRole!='NonTreatment'}">
  <tr bgcolor="eeffee">
    <td colspan="3" align="left">
        <hr noshade size="1" width="100%">
  
        <input id="addArm" type="button" value="Add Arm" onclick="$('h-${treatmentEpochCount.index}').show(); javascript:RowManager.addRow(RowManager.getNestedRowInserter(genericEpochRowInserterProps,${treatmentEpochCount.index}));" />
        <br />
        <!--ARMS TABLE-->
  
        <table id="arm" class="tablecontent" border="0">
  <%----%>
            
        <tr id="h-${treatmentEpochCount.index}" <c:if test="${fn:length(treatmentEpoch.arms) == 0}">style="display:none;"</c:if>>
            <th><span class="required-indicator">Arm</span><tags:hoverHint id="study.arm.name-${treatmentEpochCount.index}" keyProp="study.arm.name"/></th>
            <th>Description<tags:hoverHint id="study.arm.description-${treatmentEpochCount.index}" keyProp="study.arm.description"/></th>
            <th>Accrual Ceiling<tags:hoverHint id="study.arm.targetAccrualNumber-${treatmentEpochCount.index}" keyProp="study.arm.targetAccrualNumber"/></th>
            <th></th>
        </tr>
            <!--ARMS START -->
              <c:forEach items="${treatmentEpoch.arms}" var="arm" varStatus="statusArms">
              <tr id="arm-${statusArms.index}">
  