for my $product ($dom->findnodes('/products/product')) {
	my $sku = $product->findvalue('sku');
	for my $item ( $product->findnodes(
			'downloads/group/group_items/item') ) {
		my $name = $item->findvalue('name');
		my $url = $item->findvalue('url');
		$items{$sku}{$name} = $url;
	}
}