function getLegacyAttachmentFilename($filename, $attachment_id)
	{
		// Remove special accented characters - ie. sÌ (because they won't write to the filesystem well.)
		$clean_name = strtr($filename, 'äéöûü¿¡¬√ƒ≈«»… ÀÃÕŒœ—“”‘’÷ÿŸ⁄€‹›‡·‚„‰ÂÁËÈÍÎÏÌÓÔÒÚÛÙıˆ¯˘˙˚¸˝ˇ', 'SZszYAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy');
		$clean_name = strtr($clean_name, array('fi' => 'TH', '˛' => 'th', '–' => 'DH', '' => 'dh', 'fl' => 'ss', 'å' => 'OE', 'ú' => 'oe', '∆' => 'AE', 'Ê' => 'ae', 'µ' => 'u'));
 
		// Get rid of dots, spaces, and other weird characters.
		$clean_name = preg_replace(array('/\s/', '/[^\w_\.\-]/'), array('_', ''), $clean_name);
 
		return $attachment_id . '_' . strtr($clean_name, '.', '_') . md5($clean_name);
	}
 
	function getLegacyAttachmentFilenameNew($filename, $attachment_id)
	{
		// Remove special accented characters - ie. sÌ (because they won't write to the filesystem well.)
		$clean_name = strtr($filename, array(chr(138) => 'S', chr(142) => 'Z', chr(154) => 's', chr(158) => 'z', chr(159) => 'Y', chr(192) => 'A', chr(193) => 'A', chr(194) => 'A', chr(195) => 'A', chr(196) => 'A', chr(197) => 'A', chr(199) => 'C', chr(200) => 'E', chr(201) => 'E', chr(202) => 'E', chr(203) => 'E', chr(204) => 'I', chr(205) => 'I', chr(206) => 'I', chr(207) => 'I', chr(209) => 'N', chr(210) => 'O', chr(211) => 'O', chr(212) => 'O', chr(213) => 'O', chr(214) => 'O', chr(216) => 'O', chr(217) => 'U', chr(218) => 'U', chr(219) => 'U', chr(220) => 'U', chr(221) => 'Y', chr(224) => 'a', chr(225) => 'a', chr(226) => 'a', chr(227) => 'a', chr(228) => 'a', chr(229) => 'a', chr(231) => 'c', chr(232) => 'e', chr(233) => 'e', chr(234) => 'e', chr(235) => 'e', chr(236) => 'i', chr(237) => 'i', chr(238) => 'i', chr(239) => 'i', chr(241) => 'n', chr(242) => 'o', chr(243) => 'o', chr(244) => 'o', chr(245) => 'o', chr(246) => 'o', chr(248) => 'o', chr(249) => 'u', chr(250) => 'u', chr(251) => 'u', chr(252) => 'u', chr(253) => 'y', chr(255) => 'y'));
		$clean_name = strtr($clean_name, array(chr(222) => 'TH', chr(254) => 'th', chr(208) => 'DH', chr(240) => 'dh', chr(223) => 'ss', chr(140) => 'OE', chr(156) => 'oe', chr(198) => 'AE', chr(230) => 'ae', chr(181) => 'u'));
 
		// Get rid of dots, spaces, and other weird characters.
		$clean_name = preg_replace(array('/\s/', '/[^\w_\.\-]/'), array('_', ''), $clean_name);
 
		return $attachment_id . '_' . strtr($clean_name, '.', '_') . md5($clean_name);
	}