static function Trans($text,$from_charset,$to_charset,$options = array()){
		$from_charset = self::_GetCharsetByName($from_charset);
		$to_charset = self::_GetCharsetByName($to_charset);
		if($from_charset==$to_charset){
			return $text;
		}
		return self::_Trans($text,$from_charset,$to_charset,$options);
	}