jquery.wait.js

//You can use jQuery deferreds as well as traditional callbacks
$.fn.wait = function (ms,callback){
	var dfd = $.Deferred();
	setTimeout(function(){
		dfd.resolve();
	},ms);
	if(callback){
		dfd.done(callback);
	}
	return dfd.promise();
};
$.fn.defer = function (callback){
	return $.fn.wait.call(this, 1, callback);
};

/* Examples:
   $('.hugeTable').addClass('loading').defer().done(function(){
     $(this).sortable().removeClass('loading');
   });

   $('form').submit(function(){
     $('#button').text('Submitting...').wait(5000,function(){
       $(this).text('Still submitting...');
     });
   });
*/