function openAlphaRegister() {
  $('alpha-signup-inner').innerHTML = $('alpha-signup-form').innerHTML;
  Dialog.info($('alpha-signup').innerHTML, { className: 'alphacube',
                                             title: 'Register for Updates',
                                             width: 350,
                                             height: 220
                                           });
  return false;
}

// Submit the registration form
function alphaSignup(form) {
  // Display progress spinner & disable the form
  // Start the AJAX request
  new Ajax.Request('/ajax/alpha',
                   { parameters: form.serialize(true),
		     onSuccess: function(transport) {
                       $('alpha-signup-inner').innerHTML =
				$('alpha-thanks').innerHTML;
		     },
		     onFailure: function(transport) {
		       $('alpha-signup-error').innerHTML =
				transport.responseText;
                     }
		   });
  return false;
}