Event.observe(window, 'load', function() {
	$$('.left_nav').each(function(elem) {
		Event.observe(elem, 'mouseover', function() {
			var l = $(this).select('.left_nav_l2');
			if(l.size() > 0) {
				$(elem).addClassName('left_nav_on');
				l[0].show();
			}
		});
		Event.observe(elem, 'mouseout', function() {
			var l = $(this).select('.left_nav_l2');
			if(l.size() > 0) {
				$(elem).removeClassName('left_nav_on');
				l[0].hide();
			}
		});
	});
	Event.observe($('purchase_nav'), 'mouseover', function() {
		$('pbNav').show();
	});
	Event.observe($('purchase_nav'), 'mouseout', function() {
		$('pbNav').hide();
	});
});