anchor.diff:  						</c:choose>
   						<br><br>
   						<select class="tags" id="sumSelect" multiple="multiple">
  -							<c:forEach var="item" items="${model.tags}">
  -				            	<option value="${item}">${item}</option>						
  -							</c:forEach>
  +							<c:choose> 
  +      							<c:when test="${empty model.tags}"> 
  +      								<option value="业务大盘">业务大盘</option>	
  +      							</c:when>
  +      							<c:otherwise>
  +      								<c:forEach var="item" items="${model.tags}">
  +						            	<option value="${item}">${item}</option>						
  +									</c:forEach>
  +      							</c:otherwise>
  +      						</c:choose>
   						</select>
   						<button class="btn btn-success btn-small" id="addSumTag" type="button">
   			                添加标签<i class="icon-plus icon-white"></i>
  
positive.code: 						</c:choose>
  						<br><br>
  						<select class="tags" id="avgSelect" multiple="multiple">
  							<c:forEach var="item" items="${model.tags}">
  				            	<option value="${item}">${item}</option>						
  							</c:forEach>
  						</select>
  						<button class="btn btn-success btn-small" id="addAvgTag" type="button">
  			                添加标签<i class="icon-plus icon-white"></i>
  
negative.code: 						</c:choose>
  						<br><br>
  						<select class="tags" id="countSelect" multiple="multiple">
  							<c:choose> 
        							<c:when test="${empty model.tags}"> 
        								<option value="业务大盘">业务大盘</option>	
        							</c:when>
        							<c:otherwise>
        								<c:forEach var="item" items="${model.tags}">
  						            	<option value="${item}">${item}</option>						
  									</c:forEach>
        							</c:otherwise>
        						</c:choose>
  						</select>
  						<button class="btn btn-success btn-small" id="addCountTag" type="button">
  			                添加标签<i class="icon-plus icon-white"></i>
  