function Subscribe(Subscription){
  
  
  new Ajax.Request('/shared/newsletter_ajax.php?cmd=subscription',
  {
   method: 'post',
   parameters: 'email=' + encodeURIComponent($('email').value) + '&subscription=' + Subscription,
   asynchronous: false,
   onSuccess: function(transport){
    Response = transport.responseText.evalJSON()
    alert(Response.Message)
  }
  });
}