Stocks continued to hold strong gains and trade near their session highs at midafternoon Friday, as the Dow Jones industrial average again traded above 14,000. The Nasdaq fared best with a 1.2% rise, while the Dow added 1.1%. The S&P 500 rose 1%. Volume was tracking down from Thursday's level for the Nasdaq, but up for the NYSE. Google (GOOG) was helping the Nasdaq by rising 2% in fast trade to a new all-time high. The tech giant, which accounts