window.addEvent('domready', function() {
	var el = $('myElement');
		
	$('tweenOpacity1').addEvent('mouseover', function(e) {
		e.stop();
		el.fade(0.2);
	});
	
	$('tweenOpacity1').addEvent('mouseout', function(e) {
		e.stop();
		el.fade(1);
	});
});