var c=14;

   var n;

   for (n=0; n<c; n++)
   {
      document.getElementById("feature" + n).style['display']='none';
   }

   n=c-1;

   function nextFeature()
   {
      document.getElementById("feature" + n).style['display']='none';
      n=(n+1) % c;
      document.getElementById("feature" + n).style['display']='inline';
      setTimeout("nextFeature()", 3000);
   }

   nextFeature();