Currently the orderbook loads from the highest price number to the lowest price number.
E.g. over at BTC/TWINS, during loading of the page the sell orderbook will briefly display the highest price range of the orderbook (currently 74 000 000 - 270 000 000) until it's done loading, at which point it immediately flashes to the primary sell orders (lowest price numbers, currently at 34 000 000 - 51 000 000).
This is not a problem with the buy orderbook side since the highest price number is also the first buy order.
Therefore it seems the buy and sell orderbook sides could be loaded from the first available order, instead of the highest price number, to avoid the quick scroll flash.