Double Fouls

[Rackster]

Our local youth football league plays by HFHS rules.On a double foul,don't the fouls offset and the down replayed.The ref in our game saturday called a facemask on a defensive player and a hold on an offensive player (the holder also was the person being facemasked,not that it matters).The ref said the penalties offset and the result of the play (TD)counted.I saw in the rule book about the down being replayed but I also saw something that said ,On double fouls,distanced gained is not penalized.What exactly does this mean?