var message = "!!! Bonjour !!! Rejoins-moi , Je t'attend !! Vite Vite !!";
  var speed = 100;
  var forward = true; 

  function bounce(){
    if (forward) {
      message = " " + message;
      forward = ((message.length > 120) ? false : true);
    } else {
      if (message.charAt(0) == ' ') {
        message = message.substring(1, message.length);
      } else {
        forward = true;
      }
    }
    window.status = message;
    setTimeout("bounce()", speed);
  } 

  bounce();