var panels = new Array('paintings', 'bio')
      function showPanel(name, artistid)
      {
        for(i = 0; i < panels.length; i++) {
          var panelid = panels[i] + artistid; 
          document.getElementById(panelid).style.display = (name == panels[i] && document.getElementById(panelid).style.display == 'none') ? 'block':'none';
        }
        return false;
      }