window.addEvent('domready', function() {
	/* navigation tabs */
	var tabs = $$('#logo_nav li');

	tabs.each(function(tab, i) {
		tab.addEvent('mouseover', function() {
			tabs.each(function(tab, i){
				if (tab.className != 'tabnav_current') {
					tab.className = 'tabnav';
				}
			});

			if (tab.className != 'tabnav_current') {
				tab.className = 'tabnav_selected';
			}
		});
		
		tab.addEvent('mouseout', function() {
			if (tab.className != 'tabnav_current') {
				tab.className = 'tabnav';
			}
		});
	});
});