if ($config['news_number'] == 1):
	$prev_page = "<link rel=\"prev\" href=\"http://www.site.com/\" />";
				 echo $prev_page;
else:
	$prev_     = $config['news_number'] - 1;
	$prev_page = "<link rel=\"prev\" href=\"http://www.site.com/page/{$prev_}\" />";
				 echo $prev_page;
endif;

if ($config['news_number'] != $count_all):
	$next_     = $config['news_number'] + 1;
	$next_page = "<link rel=\"prev\" href=\"http://www.site.com/page/{$next_}\" />";
				 echo $next_page;
endif;