anchor.diff:                      });
                   </script>
   
  -
  -
  -
                   <div id="accordion">
  +
  +                    <% if(divideHistograms) { %>
                       <h2 class="cross_cancer_header">Studies with Mutation Data</h2>
  +                    <% } %>
  +
                       <div class="sortable">
                       <% outputCancerStudies(cancerStudiesWithMutations, out); %>
                       <% if( !cancerStudiesWithOutMutations.isEmpty() ) {
                       %>
                       </div>
                       <div class="sortable">
  +
  +                    <% if(divideHistograms) { %>
                       <h2 class="cross_cancer_header">Studies without Mutation Data</h2>
  +                    <% } %>
  +
                       <%
                               outputCancerStudies(cancerStudiesWithOutMutations, out);
                          }
  
positive.code:             histogramChart2.draw(histogramView2, options2);
  
              var options3 = {
                title: 'Number of Altered Cases for Each Cancer Study with Mutation data (' + genesQueried + ')',
                colors: multipleGenes ? ['#aaaaaa', '#eeeeee'] : ['#aaaaaa',  '#008000', '#002efa', '#ff2617', '#eeeeee'],
                legend: {
                  position: 'bottom'
  
negative.code: 
      ServletXssUtil servletXssUtil = ServletXssUtil.getInstance();
      String geneList = servletXssUtil.getCleanInput(request, QueryBuilder.GENE_LIST);
  
      // Infer whether there is multiple genes or not (for histogram switching)
      int geneCount = 0;
  