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// remote custom tags
	$custom_mycode = $cache->read("mycode");
	if (is_array($custom_mycode)) {
		foreach ($custom_mycode as $key => $mycode) 
		{
			$message = preg_replace("#".$mycode['regex']."#si", '', $message);
		}
	}
	
	// remove smilies
	$smilies = $cache->read("smilies");
	if (is_array($smilies)) {
		foreach($smilies as $sid => $smilie)
		{
			$message = str_replace($smilie['find'], '', $message);
		}
	}
	
	// remove more un-needed data here
	// -- we can decode html entities if we have PHP 5
	if (version_compare(PHP_VERSION, '5.1.0', '>=')) {
		$message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
	} else {
		$message = preg_replace("/&([a-z]+);/", "", $message);
	}
	
	$message = str_replace("\r", "", $message);
	$message = str_replace("\n", " ", $message);
	$message = str_replace(array('"', "[", "]", "<", ">", "\\", "/", "=", "+"), "", $message);
	$message = preg_replace("#\s{2,}#", " ", $message);
	
	// there has to be a limit to the description
	if (($msg_len = strlen($message)) > MAX_DESCRIPTION_LEN) {

		// try stripping on a space somewhere near the limit
		$substr_begin = substr($message, 0, MAX_DESCRIPTION_LEN+5);
		$substr = substr($message, 0, strrpos($substr_begin, ' '));

		// caused a change more than 20%, that isn't acceptable!
		if (((MAX_DESCRIPTION_LEN+5) - strlen($substr)) > (0.20*MAX_DESCRIPTION_LEN)) {
			$message = substr($message, 0, MAX_DESCRIPTION_LEN) . "...";
		} else {
			$message = $substr . "...";
		}
	}
				
	return $message;
}

/**
 * Clean the title strings to be used as file names in 
 * links, where required. 
 * 
 * @access private
 */
function seo_clean_title($title, $title_type = 't')
{
	global $lang;

	// maybe we don't need keywords at all!	
	if (NO_KEYWORDS == 1) {
		switch ($title_type) {
			case 't':
				$title = 'thread';
				break;

			case 'f':
				$title = 'forum';
				break;

			case 'a':
				$title = 'announcement';
				break;
				
			case 'u':
				$title = 'user';
				break;
		}
		return $title;
	}
	
	// do the replacements and return encoded url
	$title = str_replace("&amp;", "&", $title);
	$title = preg_replace("/&([a-z]+);/", "", $title); // remove html entities such as &amp; &quot etc..
	$title = preg_replace("/&#([0-9]+);/", "", $title); // remove entities like !
	
	// added in BETA 9, to fix issues with some latin characters
	if (stristr($lang->settings['charset'], 'iso')) {
		$title = utf8_encode($title);
		$is_utf8 = 1;
	}
	
	$title = utf8_trans_unaccent($title);
	
	// translate accents -- and maybe remove few non-ascii characters too, while on it..
	$title = preg_replace('#&([a-zA-Z])(circ|uml|grave|tilde|acute|cedil|ring|th);#', '\\1', htmlentities($title, null, 'utf-8'));
	$title = preg_replace("/&([a-z]+);/", "", $title);
	
	if ($is_utf8 == 1) {
		$title = utf8_decode($title);
	}
	
	// might be something like jackal's, we don't want it to be jackal-s
	$title = str_replace("'", '', $title);
	
	$title = str_replace(
			array(":", "?", ".", "!", "$", "^", "*", ",", ";", '"', "%", "~", "@", "#", "[", "]", "<", ">", "\\", "/", "=", "+", "(", ")"), 
						"-", $title);
	
	$title = str_replace(array('_', " ", "&"), array("-", "-", "and"), $title);
	
	// remove multiple separators
	$title = preg_replace("#-{2,}#", "-", $title);

	// remove ending - if needed
	if (substr($title, -1) == '-') {
		$title = substr($title, 0, -1);
	}	

	// convert to lowercase?
	if (FORCE_LOWERCASE == 1) {
		$title = strtolower($title);
	}
	
	// limit number of keywords in the url?
	if (MAX_KEYWORDS > 0) 
	{
		$words = explode("-", $title);
		
		// if we have more words than allowed..
		if (count($words) > MAX_KEYWORDS)
		{
			// common words, which can be stripped out if enabled
			$common_words = array('is', 'you', 'are', 'in', 'at', 'the', 'and', 'to', 'of', 'or', 'from', 'when', 'where', 'be', 'you');
			
			$i = 0;
			foreach ($words as $word) 
			{
				if ($i >= MAX_KEYWORDS) {
					break;
				}
			
				$length = strlen($word);

				// strip the keyword, if it has less length than defined, or if it's a common word -- if enabled!
				if ( ($length < LEN_FOR_KEYWORD && STRIP_LESS_LEN == 1) OR (STRIP_COMMON_WORDS == 1 && in_array($word, $common_words)) ) {
					continue;
				}
					
				// it has the number of characters to be counted as a keyword?
				if (LEN_FOR_KEYWORD == 0 OR $length >= LEN_FOR_KEYWORD) {
					$i++;
				}
			
				$new_title[] = $word;
			}
		
			// in some cases, due to less intelligence of the automatic keyword stripper there 
			// might be no keywords left to show, in that case, just display the original!
			if (count($new_title) > 0) {
				$title = implode("-", $new_title);
			}
		}
	}
	
	return rawurlencode($title);
}