function rot13init()
{
  var map = new Array();
  var s   = "abcdefghijklmnopqrstuvwxyz";
  
  for (i=0; i<s.length; i++)
    map[s.charAt(i)]			= s.charAt((i+13)%26);
  for (i=0; i<s.length; i++)
    map[s.charAt(i).toUpperCase()]	= s.charAt((i+13)%26).toUpperCase();
  return map;
}

function rot13(a)
{
rot13map=rot13init();

  s = "";
  for (i=0; i<a.length; i++)
    {
      var b = a.charAt(i);

      s	+= (b>='A' && b<='Z' || b>='a' && b<='z' ? rot13map[b] : b);
    }
  return s;
}

function mailto(str) {
	document.location.href = "mailto:"+rot13(str) ;
	}