function add_corners() {
	$$('#nav li').each(function(li) {
		(2).times(function(i) {
			new Insertion.Bottom(li, '<span class="t' + (i ? 'l' : 'r') + '"></span>');
		})
	})
}

function target_blank(e) {
	var a = Event.element(e);
	if (a.tagName != 'A') {
		a = a.up('a');
	}
	
	open_new_window(a.href);
	
	Event.stop(e);
}

function open_new_window(url) {
	window.open(url, '_blank', 'status=yes,toolbar=yes,menubar=yes,location=yes,resizable=yes,scrollbars=1');
}

Event.observe(window, 'load', function() {
	$$('a.nw').invoke('observe', 'click', target_blank);
	
	$$('#nav li').each(function(li) {
		(2).times(function(i) {
			new Insertion.Bottom(li, '<span class="t' + (i ? 'l' : 'r') + '"></span>');
		})
	})
	
	if (navigator.userAgent.indexOf('MSIE 6') != -1) {
		if (confirm("With the release of Internet Exporer 7, your browser is now obsolete. We recommend either upgrading to IE7 via Windows Update, or upgrading to a free, leading browser like Mozilla's Firefox or Apple's Safari. If you'd like to do so, just click OK!")) {
			open_new_window('http://www.mozilla.com/firefox');
		}
	}
});