$(document).ready(function(){
  $("form .message").css('display', 'none');
  
  $("form").ajaxForm({
    target: "form .message",
    beforeSubmit: before_submit,
    success: success
  });
   
  $("form").ajaxSubmit(function() {
    return false;
  });
  
  function before_submit() {
    $("form button").attr("disabled", true); 
    $("form .spinner").fadeIn();
    $("form .message").animate({ opacity: 0 }).slideUp();
  }
  
  function success() {
    $("form button").attr("disabled", false); 
    $("form .spinner").fadeOut();
    $("form .message").slideDown().animate({ opacity: 1 });
  }
  
});