Too short to excerpt: NEW YORK (AP) - Crude oil on the futures market briefly sank below the $100-a-barrel Friday for the first time in five months-suggesting investors believe a worsening global economy will continue to drive down demand for some time in the United States and elsewhere. The last time crude traded below $100 a barrel was on April 2. Gasoline prices, however, jumped at the wholesale level as Hurricane Ike swept toward Houston, home to about one-fifth of U.S. refining capacity, and the site of a major fuel and grain distribution channel. Wholesale gasoline prices on the Gulf...