window.addEvent('domready', function() {
	
	var allLinks = $('mainMenu').getElements('li');
	var a = allLinks.length;
	
	for(var i=0; i<a; i++)
	{
		allLinks[i].addEvent('mouseover', function(e){
			e.stop();
			this.set('opacity', 0.2);
			this.fade('1');
		});
	}
	
});