anchor.diff:  <%@page pageEncoding="UTF-8"%>
   
   <%
  +long UTC_FIX = 2*60*60*1000L;
     ArrayList<ArrayList<StatisticsDataSize>> allDataSizeList = (  ArrayList<ArrayList<StatisticsDataSize>> ) request.getAttribute(DashboardServlet.DATA_SIZE_HISTORY_ATTRIBUTE);
     ArrayList<String> allDataSizeNamesList = (  ArrayList<String> ) request.getAttribute(DashboardServlet.DATA_SIZE_HISTORY_NAMES_ATTRIBUTE);
     
  
positive.code: <%
  for (int j = 0 ;j <dataSizeList.size();j++){
    StatisticsDataSize current = dataSizeList.get(j);%>
   [<%=current.getDateMillis()%> ,  <%=current.getDataSize()/byteUnit%> ],
  <%}%>
  ];
  
  
negative.code: 
                  $("#tooltip").remove();
                  
                  var x = item.datapoint[0]-<%=UTC_FIX%>;
                  var y = item.datapoint[1];                
                  
                  var d = new Date(x);
  