How many weeks' holiday a year are there? <a href=" http://www.corpouraba.gov.co/where-to-buy-griseofulvin-for-dogs.pdf#legend ">where to buy griseofulvin for dogs</a> The Dow Jones industrial average dropped 131.10points, or 0.86 percent, at 15,060.60. The Standard & Poor's 500Index was down 12.54 points, or 0.74 percent, at1,682.46. The Nasdaq Composite Index was down 18.08points, or 0.47 percent, at 3,799.90.