IE Fix: set prev to false and not null when creating the JSON data.
IE Fix: set prev to false and not null when creating the JSON data.

printedheart/jit,shzy2012/jit,philogb/jit,pingjiang/jit,pingjiang/jit,shelsonjava/jit,mcanthony/jit,printedheart/jit,shzy2012/jit,pingjiang/jit,tim777z/jit,mcanthony/jit,shelsonjava/jit,philogb/jit,shzy2012/jit,mcanthony/jit,tim777z/jit,printedheart/jit,tim777z/jit,shelsonjava/jit