function hidemail(revaddress, text) {
   if (!revaddress) return '';

   var returnstr='';
   for (i = revaddress.length-1; i>=0; i--)
       returnstr+=revaddress.charAt(i)
       
   if (!text) text = returnstr;
   returnstr='<a href="mailto:' + returnstr + '">' + text + '</' + 'a>';
   return returnstr;
}