// Apply alternate styles to sub lists in nav bar:
window.addEvent('domready', function() {
	if (Browser.Engine.trident4) { // IE6 only:
		$$("#nav_main ul").getParent().addEvents({
			mouseover: function() {
				this.getLast().addClass('hover');
			},
			mouseout: function() {
				this.getLast().removeClass('hover');
			}
		});
	}
	var has_subs = $$('li.has_subs');
	has_subs.each(function(item, index) {
		item.getElement('ul').addEvent('mouseover', function() {
			item.getElement('a').addClass('sub_open');
		});
		item.getElement('ul').addEvent('mouseout', function() {
			item.getElement('a').removeClass('sub_open');
		});
		item.getElement('ul').addEvent('click', function() {
			item.getElement('ul').setStyle('display', 'block');
		});
	});
});