//remove unnecessary tags		
	function filtertags($text){
		$text = nl2br($text);
		$text = str_replace("<br />","",$text);
		$text = str_replace("<br>","",$text);
		$text = str_replace("'","",$text);
		$text = ereg_replace("^"," ",$text);
		$text = str_replace(".","",$text);
		$text = str_replace("?","",$text);
		$text = str_replace('"',"",$text);
		$text = str_replace('-',"",$text);
		$text = str_replace('!',"",$text);
		$text = str_replace(':',"",$text);
		$text = str_replace(';',"",$text);															
		$text = strip_tags($text);
		$text = utility::removeTags($text);
		$text = trim($text);
	return $text;
	}
	
	//remove unnecessary characters		
	function filterword($word){
		$word = ereg_replace(",","",$word);
		$word = ereg_replace("\?","",$word);
		$word = ereg_replace("\(","",$word);
		$word = ereg_replace("\)","",$word);
		$word = ereg_replace("\.","",$word);
		$word = ereg_replace("\.","",$word);		
		$word= strtolower($word);	
	return $word;	
	}