SEATTLE — The first half was all the New York Giants needed to put away the Seahawks and memories of past losses in Seattle.Eli Manning picked apart Seattle’s secondary for 232 yards and three touchdowns and Ahmad Bradshaw added two TDs — all in the opening half — and the Giants routed the Seahawks 41-7 on Sunday.Coming off its bye, New York (6-2) won its fifth straight game and is among the NFL’s top teams halfway through the season.The win had a little extra meaning. Five years ago at Qwest Field, the Giants were penalized 14 times — including 11 false starts — in a 24-21 overtime loss. A year later, after the Giants made claims that artificial crowd noise was being piped into the stadium, the Seahawks jumped to a 42-3 lead in another win over New York.This time, the Giants were called for just two false start penalties and handed Seattle its worst home loss since 2002. It was the Giants biggest road win since a 41-7 win at Washington in 1993.Manning’s passer rating was a nearly perfect 152.3 in the first half. He finished 21 of 32 for 290 yards and TD passes of 46, 6, and 5 yards. Bradshaw, Brandon Jacobs and D.J. Ware combined for 201 yards rushing, while Hakeem Nicks had six catches for 128 yards.