window.addEvent('domready', function(){
	
	$('navigation').getElements('div.myOtherElement').each(function(el){
		var a_num = el.getElements('a').length;
		if (el.getElements('div').length > 0)
			el.addEvents({
				'mouseenter': function(){
					this.set('tween', {
						duration: 600,
						transition: Fx.Transitions.Bounce.easeOut // This could have been also 'bounce:out'
					}).tween('height', a_num*16 + 'px');
				},
				'mouseleave': function(){
					this.set('tween', {}).tween('height', '15px');
				}
			});
	});

});