function referrals_invite_friends() {
  $('referral_button').disable();
  
  $('referral_notes').hide();
  $('referral_busy').show();
  
  var friends = $F('referral_emails');
  
  new Ajax.Request('ajax.php',
  { 
    parameters: { 
      ajax: 'ajax_invite_friends.php', 
      emails: friends
    },
    onSuccess: function(response) {
      var json_response = response.responseText.evalJSON();
      
      if(json_response.ajax_status == 1) {
        $('referral_notes').innerHTML = json_response.html;
        spjs_hide('buzz_busy_'+div_id);
        spjs_show('buzz_buzzed_'+div_id);
      }
      else {
        alert(json_response.error_msg);
      }
			
			$('referral_button').enable();
      $('referral_notes').show();
      $('referral_busy').hide();
      $('referral_emails').value = '';
    },
    onFailure: function() { 
      alert('Couldn\'t send invites...') 
    }
  });
}