Event.observe(window, 'load', init, false);

function init() {

  Event.observe('addressForm', 'submit', storeAddress);

}

function storeAddress(e) {

  $('response').innerHTML = 'JazakAllaah! Adding email address...';

  var pars = 'address=' + escape($F('address'));

  var myAjax = new Ajax.Updater('response', 'ajaxServer.php', {method: 'get', parameters: pars});

  Event.stop(e);

}