function addtocart(prod_id)
{
	var cart = readCookie('shopping-cart-contents');
	cart = cart == null || cart == '' ? new Array() : decodeURI(cart).split('|');
	
	var blocklist = readCookie('shopping-cart-blocklist');
	//alert(blocklist);
	blocklist = blocklist == null || blocklist == '' ? new Array() : decodeURI(blocklist).split('|');
	
	//alert(prod_id+' -- '+blocklist.indexOf(''+prod_id)+' -- '+blocklist.inspect());
	if (cart.indexOf(''+prod_id) == -1 && blocklist.indexOf(''+prod_id) == -1) 
		cart.push(prod_id);
	else
	{
		if (cart.indexOf(''+prod_id) > -1) return 2;
		if (blocklist.indexOf(''+prod_id) > -1) return 3;
	}
	
	createCookie('shopping-cart-contents', cart.join('|'));
	return 1;
}
function removefromcart(prod_id)
{
	var cart = readCookie('shopping-cart-contents');
	if (cart == null || cart == '') return false;
	
	cart = decodeURI(cart).split('|');
	var index = cart.indexOf(''+prod_id);
	if (index == -1) return false;
	
	cart.splice(index, 1);
	createCookie('shopping-cart-contents', cart.length > 0 ? cart.join('|') : '');
	return true;
}
function upgradecart(prod_id, updown)
{
	if (typeof(updown) == 'undefined') updown = 1;
	var cart = readCookie('shopping-cart-contents');
	if (cart == null || cart == '') return false;
	
	cart = decodeURI(cart).split('|');
	var index = cart.indexOf(''+prod_id+(updown == -1 ? '-d' : ''));
	if (index == -1) return false;
	
	cart[index] = prod_id+(updown == 1 ? '-d' : '');
	createCookie('shopping-cart-contents', cart.join('|'));
	return true;
}
function emptycart()
{
	createCookie('shopping-cart-contents', '');
	return true;
}
function setcoupon(couponcode)
{
	createCookie('shopping-cart-coupon', couponcode);
}