anchor.diff:  
       ServletXssUtil servletXssUtil = ServletXssUtil.getInstance();
       String geneList = servletXssUtil.getCleanInput(request, QueryBuilder.GENE_LIST);
  -
  -    // Get priority settings
  -    Integer caseSetPriority;
  -    try {
  -        caseSetPriority
  -                = Integer.parseInt(request.getParameter(QueryBuilder.DATA_PRIORITY).trim());
  -    } catch (NumberFormatException e) {
  -        caseSetPriority = 0;
  -    }
   
       // Infer whether there is multiple genes or not (for histogram switching)
       int geneCount = 0;
  
positive.code:     ArrayList<CancerStudy> cancerStudies = (ArrayList<CancerStudy>)
              request.getAttribute(QueryBuilder.CANCER_TYPES_INTERNAL);
  
      ArrayList<CancerStudy> cancerStudiesWithMutations = new ArrayList<CancerStudy>(),
                             cancerStudiesWithOutMutations = new ArrayList<CancerStudy>();
      for(CancerStudy cancerStudy: cancerStudies) {
          if(cancerStudy.hasMutationData()) {
              cancerStudiesWithMutations.add(cancerStudy);
          } else {
              cancerStudiesWithOutMutations.add(cancerStudy);
          }
      }
  
  
negative.code:             var cancerID = cancerStudies[bundleIndex];
              $("#study_" + cancerID)
                  .load('cross_cancer_summary.do?gene_list=<%= geneList %>&cancer_study_id='
                      + cancerID + '&<%=QueryBuilder.DATA_PRIORITY + "=" + dataPriority%>',
                          function() {
  
                              setTimeout(function() {
  