function funktion(o,a,x)
{
  o.onmouseover = '';
  addr = '';
  a = unescape(a);
  for(c =0; c < a.length; ++c)
    {
      addr+=String.fromCharCode(a.charCodeAt(c) - x);
    }
   o.parentNode.setAttribute('href', 'mailto:' + addr);
}