Another day of choppy sideways trading is envisaged as dollar's rebound from 86.96 to 88.22 last week signals mid-term erratic fall from 94.99 has made a temporary low and consolidation with initial upside bias is seen, reckon 88.77 would hold and yield decline later.     On the downside, only below 87.33 would risk further weakness but 86.96 would hold.