Event.observe(window, 'load', function() {
	$$('ul.main_menu a').each(function (element) {
		element.observe('mouseover', function() {
				element.addClassName('hover');
			});

		element.down('.play').observe('mouseover', function() {
				element.addClassName('hover');
			});

		element.observe('mouseout', function() {
			element.removeClassName('hover');
		});
	});
});