Conflicting images of Los Angeles flicker across our television and movie screens: Hollywood glamour contrasts with gang violence, year-round sunny skies with smog, fast cars with traffic jams. From what travelers can gather, Los Angeles is a land of style and disaster, movers and shakers and earthquakes. Residents are accustomed to a rhythm that alternates between relaxation and stress, but out-of-towners -- fortunately -- tend to experience much more of the former.The nation's second-largest city (after New York), L.A. is a great place in which to do business or take a vacation. Marvelous restaurants, terrific nightlife, beaches, diverse cultural offerings, Disneyland and easygoing attitudes converge in a vast territory flooded with sunshine and lined with palms. Nearly everyone should s