sub addItemCart {
	my ($cgi, $session, $orderitem) = @_;

	my $orderitem = &getItemForCart($cgi, $session);

	# get current cart contents
	my $cart = $session->param("CART") || [];
	# add selected item
	push @{$cart}, $orderitem;
	# update the CART in the session
	$session->param( "CART", $cart );
	$session->flush();
	return displayCart($cgi, $session);
}