private static int[] stringToArray_4(String s) {
        int[] ret = null;

        if ((s != null) && !s.equals("")) {
            String[] tmp = s.split(SkinConstants.SPLIT2);

            if (tmp.length == 4) {
                ret = new int[4];

                try {
                    for (int i = 0; i < tmp.length; i++) {
                        ret[i] = Integer.parseInt(tmp[i]);
                    }

                } catch (NumberFormatException e) {
                    ret = null;
                }
            }
        }

        return ret;
    }