anchor.diff:  		<br />
               <% if(alarms[i].getIpAddr() != null ) { %>
                 <% Filter intfFilter = new InterfaceFilter(alarms[i].getIpAddr()); %>
  -              <% if( alarms[i].getNodeId() != 0 ) { %>
  +              <% if( alarms[i].getNodeId() != null ) { %>
                   <c:url var="interfaceLink" value="element/interface.jsp">
                     <c:param name="node" value="<%=String.valueOf(alarms[i].getNodeId())%>"/>
                     <c:param name="intf" value="<%=InetAddressUtils.str(alarms[i].getIpAddr())%>"/>
  
positive.code: 	</thead>
  
        <% for( int i=0; i < alarms.length; i++ ) { 
        	OnmsAlarm alarm = alarms[i];
        	pageContext.setAttribute("alarm", alarm);
        %> 
  
          <tr class="<%=alarms[i].getSeverity().getLabel()%>">
  
negative.code:           <br />
              <% if(alarms[i].getServiceType() != null && !"".equals(alarms[i].getServiceType().getName())) { %>
                <% Filter serviceFilter = new ServiceFilter(alarms[i].getServiceType().getId()); %>
                <% if( alarms[i].getNodeId() != null && alarms[i].getIpAddr() != null ) { %>
                  <c:url var="serviceLink" value="element/service.jsp">
                    <c:param name="node" value="<%=String.valueOf(alarms[i].getNodeId())%>"/>
                    <c:param name="intf" value="<%=InetAddressUtils.str(alarms[i].getIpAddr())%>"/>
  