Its old news but the only one anyone has to report about the Indian stock markets. The markets are plunging, mutual funds are suffering, equity categories making it a habit of being in red and so on and so forth. But wait, there is some good news and it comes from the equity tax-planning category. Taurus Libra Taxshield is the fund in question - it has actually produced positive returns to the tune of 21 per cent (as on 24 July, 2008) in the past one year. And that too at a time when its category shed 11 per cent and the category's worst performing fund, ABN