function isCartEmpty(cartQty)
{
	if (cartQty==0)
	{
		alert("Your shopping cart is currently empty");
		return false;
	}
	else
	{
		window.open("shopping_cart.php", "_self");
		return true;
	}
	return false;
}
function allowCheckout (allow, cartQty)
{
	if((allow==0)||(cartQty==0))
	{
		alert("Either you have ordered less than 10 springs or your shopping cart is empty");
		return false;
	}
	window.open ("checkout.php","_self");
}