anchor.diff:  
           <chrome:division title="Disease" id="disease">
               Search for a Disease Category<br>
  -            <input:hidden id="disease"/>
  +            
  +            <input type="hidden" id="disease-hidden"/>
               <form:input size="45" id="disease-input" path="diseaseCategoryAsText" cssClass="autocomplete"/>
               <tags:indicator id="disease-indicator"/>
               <div id="disease-choices" class="autocomplete"></div>
  
positive.code: function acPostSelect(mode, selectedChoice) {
      //Element.update(mode.basename + "-selected-name", mode.valueSelector(selectedChoice))
      updateCategories(selectedChoice.id);
      //$(mode.basename).value = selectedChoice.id;
      //$(mode.basename + '-selected').show()
      //new Effect.Highlight(mode.basename + "-selected")
  }
  
  function updateSelectedDisplay(mode) {
      if ($(mode.basename).value) {
          Element.update(mode.basename + "-selected-name", $(mode.basename + "-input").value)
          $(mode.basename + '-selected').show()
      }
  
negative.code:     })
      Event.observe(mode.basename + "-clear", "click", function() {
          $(mode.basename + "-selected").hide()
          $(mode.basename + "-hidden").value = ""
          $(mode.basename + "-input").value = ""
      })
  }
  