case "portfolio2":
	if( get_post_meta($current_post->ID, "_portfolio_thumb", $single = true) != '') {
		return '<img title="' . $current_post->post_title . '" alt="' . $current_post->post_title . '" src="' . get_post_meta($current_post->ID, "_portfolio_thumb", $single = true) . '" class="rounded-all" />';
	} else {
		return get_the_post_thumbnail( $current_post->ID, $context, array( 'alt' => $current_post->post_title, 'title' => $current_post->post_title, 'class' => 'rounded-all' ) );
	}
	break;