Cannot fire click event on Ext.Button

[fermo111]

I am trying to fire a click event on a button whose handler was given in the config object.
This is the code. My goal is to have the handler of the second button called in response of a click on the first button. But it does not work.

<div id='fire-btn'></div>
<div id='event-btn'></div>

Ext.onReady(function(){
	fireBtn = new Ext.Button({
		renderTo: 'fire-btn',
		text: 'Fire click event',
		handler: function(){
			eventBtn.fireEvent('click');
		}
	});
	eventBtn = new Ext.Button({
		renderTo: 'event-btn',
		text: 'Event Btn',
		handler: function(){
			alert('ok');
		}
	});
});

Thanks

Luca