function mt0(a1, a2, a3) {
  var geenSpam = a1 + "@" + a2 + "." + a3;
  document.write (geenSpam);
} 
 
function mt(a1, a2, a3, text) {
  var geenSpam = a1 + "@" + a2 + "." + a3;
  if (text == undefined) text = geenSpam;
  var result = ("<a href='" + "m" + "a" + "i" + "l" + "t" + "o" + ":" + geenSpam + "'>" + text + "</a>");
  document.write (result);
}