// Attach handler to window load event 
Event.observe(window, 'load', init, false); 

function init() { 
 // Attach handler to form's submit event 
 Event.observe('addressForm', 'submit', storeAddress); 
}
function storeAddress(e) { 
 Event.stop(e);
 // Update user interface 
 $('response').innerHTML = 'Adding email address...'; 
 // Prepare query string and send AJAX request 
 var pars = 'name=' + escape($F('name')) + '&emailaddress=' + escape($F('emailaddress'));;
 var myAjax = new Ajax.Updater('response', 'ajaxServer.php', {method: 'get', parameters: pars}); 
 // Stop form from submitting when JavaScript is enabled 
 $('response').innerHTML = 'Added email address'; 
 Event.stop(e);
}