Erasing all its initial gains, the Sensex at the Bombay Stock Exchange declined a modest 32 points, or 0.2 percent, to 18,720 in afternoon trade, a short while ago, on profit-booking after recent strong gains, amid largely weak Asian markets. Earlier, in the morning, however, the Sensex had opened 56 points, or 0.3 per cent in the green, at a fresh 14-month high of 18,809.Key stock indices in Japan, Hong Kong, Indonesia, and Singapore had lost between 0.1 percent and 0.7 percent in intra-day trade, today.