var atsynonym  = 'XqvP3r';  // für das @
var dotsynonym = 'lL5nGs';  // für Punkt

function decodeString(myEncStr) {
  var tmp;
  tmp = myEncStr.replace( eval("/" + atsynonym + "/"), '@');
  tmp = tmp.replace( eval("/" + dotsynonym + "/g"), '.');
  return(tmp);
}

function printLink(myEncStr, withclass) {
  var decStr = decodeString(myEncStr);
  with ( document ) {
    open();
    if ( withclass && withclass != '') {
      document.writeln("<a href=\"mailto:" + decStr + "\" class=\"" + withclass + "\">" + decStr + "</a>");
    } 
    else {
      document.writeln("<a href=\"mailto:" + decStr + "\">" + decStr + "</a>");
    }
    close();
  }
}