var navEnabled = true;
var navInterval;
function doShowNav(elementId) {
	clearInterval(navInterval);
	if (navCurrent != elementId && navEnabled) {
		if (navCurrent == 'na') {
			navEnabled = false;
			navCurrent = elementId;
			$('#' + elementId).fadeIn("normal", function () {
				navEnabled = true;
			});
		} else {
			navEnabled = false;
			$('#' + navCurrent).fadeOut("normal", function () {
				navCurrent = elementId;
				$('#' + elementId).fadeIn("normal", function() {
					navEnabled = true;
				});
			});
		}
	}
}
function doHideNav() {
	clearInterval(navInterval);
	navInterval = setInterval(doRevert,5000);
}
function doRevert() {
	clearInterval(navInterval);
	if (navCurrent != navOriginal) {
		navEnabled = false;
		$('#' + navCurrent).fadeOut("normal", function () {
			navCurrent = navOriginal;
			if (navOriginal != 'na') {
				$('#' + navOriginal).fadeIn("normal", function() {
					navEnabled = true;
				});
			} else {
				navEnabled = true;
			}
		});
	}
}
$(function(){$("a.external").click(function(){window.open(this.href);return false})});