function addToCart(sku) {
	var url = ajaxHost + 'ajaxCart.html';
	var pars = 'action=add&item_1=' + sku + '&q_1=' + $F('qty.' + sku); 
	var myAjax = new Ajax.Request( url, { method: 'get', parameters: pars, onComplete: updateCart });
}

function updateCart(originalRequest) {
	var url = ajaxHost + 'ajaxNavBar.html';
	var pars = '';
	var myAjax = new Ajax.Updater( 'navBar', url, { method: 'get', parameters: pars, onComplete: alertUser }); 
}

function alertUser() {
	$('alertBox').innerHTML = "Your cart has been updated.  Please click on View Cart in the nav bar to checkout.";
}