window.addEvent('domready', function() {
	$$('#main-navigation li').addEvent('mouseover', function(){
		
		this.getElements('ul.subcategory').setStyle('display', 'block');
	
	});
	$$('#main-navigation li').addEvent('mouseout', function(){
		this.getElements('ul.subcategory').setStyle('display', 'none');
	});
});