anchor.diff:                      select_clinical_attributes.prop('disabled', enable_disable).trigger("liszt:updated");
                       zoom.attr('disabled', enable_disable);
                       sortBy.prop('disabled', enable_disable).trigger("liszt:updated");
  -                    //sortBy.attr('disabled', enable_disable);
                   };
   
                   // handler for when user selects a clinical attribute to visualization
  
positive.code: 
                                  // enable the option to sort by clinical data
                                  $(sortBy.add('option[value="clinical"]')[1]).prop('disabled', false);
                                  sortBy.val('genes');        // sort by genes by default
  
                                  toggleControls(true);
  
  
negative.code:                 var select_clinical_attributes_id = '#select_clinical_attributes';
                  var oncoprintClinicals;
                  var sortBy = $('#oncoprint_controls #sort_by');
                  $('#oncoprint_controls #sort_by').chosen({width: "240px", disable_search: true });
  
                  // params: bool
                  // enable or disable all the various oncoprint controls
  