anchor.diff:      var shownHistogram = 1;
       var multipleGenes = <%=multipleGenes%>;
       var divideHistograms = <%=divideHistograms%>;
  +    var onlyMutationData = <%=(dataPriority == 1)%>;
       var maxAlterationPercent = 0;
       var lastStudyLoaded = false;
   
  
positive.code:                     </div>
                      <div class="sortable">
  
                      <% if(divideHistograms) { %>
                      <h2 class="cross_cancer_header">Studies without Mutation Data</h2>
                      <% } %>
  
                      <%
                              outputCancerStudies(cancerStudiesWithOutMutations, out);
                         }
                       %>
                      </div>
                  </div>
  
  
negative.code:                         <option value="3">Show number of altered cases (studies with mutation data)</option>
                          <option value="4">Show number of altered cases (studies without mutation data)</option>
                          <%
                              } else if(onlyMutationData) {
                          %>
                          <option value="1">Show percent of altered cases (studies with mutation data)</option>
                          <option value="3">Show number of altered cases (studies with mutation data)</option>
                          <%
                              } else {
                          %>
                          <option value="1">Show percent of altered cases</option>
                          <option value="3">Show number of altered cases</option>
  