function aggiungiAdEvento(mioid,altezza)
{
	window.addEvent('domready', function(){
		// The same as before: adding events
		$(mioid).addEvents({
			'mouseenter': function(){
				// Always sets the duration of the tween to 1000 ms and a bouncing transition
				// And then tweens the height of the element
				this.set('tween', {
					duration: 1000,
					transition: Fx.Transitions.Bounce.easeOut // This could have been also 'bounce:out'
				}).tween('height', altezza);
			},
			'mouseleave': function(){
				// Resets the tween and changes the element back to its original size
				this.set('tween', {}).tween('height', '20px');
			}
		});
	});
}