intra day call for 10th dec 08 and advice to positional short

nifty may opens near 2840-2850 today............call (1 )---- sell nifty at opening near 2850 spot level with 2863 spot as sl for tgt of 2650-2620 spot today................IMP WARNING THOSE WHO ARE HOLDING SHORT POSITIONS CAN EXIT THEIR ALL SHORTS BY EOD NEAR 2620-2650 LEVEL.....THX