code: def htmlFor(self,fname):
          
          if os.path.splitext(fname)[1].lower() in ['.jpg','.png']:
              html='<a href="%s"><img src="%s"></a>'%(fname,fname)
              if "_tif_" in fname:
                  html=html.replace('<img ','<img class="datapic micrograph"')
              if "_plot_" in fname:
                  html=html.replace('<img ','<img class="datapic intrinsic" ')
              if "_experiment_" in fname:
                  html=html.replace('<img ','<img class="datapic experiment" ')
          elif os.path.splitext(fname)[1].lower() in ['.html','.htm']:
              html='LINK: %s'%fname
          else:
              html='<br>Not sure how to show: [%s]</br>'%fname
          return html
docs: return appropriate HTML determined by file extension.