JAKARTA: Jakarta Composite Index (JCI), which measures the overall performance of Indonesian shares, plunged 2.44% or 94.50 points to 3,778.45 at the closing session today, dragged down by regional markets which were mainly in red as deepening concerning about the Europes debt crisis.The JCI was moving within the 3,763.06-3,872.21 range. About 14 shares fell for every one share up. Almost a half of the shares traded were unchanged.The biggest contributor for the JCI drop was PT Astra International Tbk with -14.79 points, followed by PT Bank Rakyat Indonesia Tbk with -10.07 points, PT Bank Central Asia Tbk with -5.75 points, and PT Bank Mandiri Tbk with -5.45 points.PT Bank Mega Tbk was one of several stocks that prevented the index drop with positive contribution of 0.25 points. Included in this line are shares of PT Elang Mahkota Teknologi Tbk with 0.24 points, PT Surya Toto Indonesia Tbk with 0.23 points, and PT Kimia Farma Tbk with 0.18 points.Foreign investors booked IDR673.18 billion net sell in today trading.In the regional market, the Japan's Nikkei 225 slumped 1.52% to 9,460.63, Hang Seng in Hong Kong market fell 2.11% to 22,711.02, Shanghai SE plunged 2.93% to 2,774.57, South Korean's Kospi dropped 2.64% to 2,055.71, and Straits Times in Singapore dived 1.86% to 3,108.39.The MSCI Asia Pacific fell 2.57% to 880.24. The rupiah traded slipped 0.67% against the US dollar at IDR8,593.Fitch Ratings cut Greece three levels to B+, four steps below investment grade, from BB+. Fitch said Greece could face a further reduction in its creditworthiness. (wiw)