Chaining function

Using mootools...

I have 3 functions that returns content from a page via ajax (function1, function2, function3). I want to chain them in order to use oncomplete. when function one is complete, start function2, etc. but I don't know exactly how to get that working... I'm a real noob at js.

window.addEvent('domready', function(){			
	var box = $('box'), log = $('log');
		log.setHTML('starting...');
		fx.start(function(){
		
			//function1 here

		}).chain(function() {
		
			//function2 here

		}).chain(function() {

			//function3 here

		})
	});

Code (markup):

Can someone please help me on this one?
Thank you.

 

sorry but that has nothing to do with what I need and neither with mootools.