Credits
JUST AN ORDINARY DAY Shirley Jackson (Bantam, $23.95) Long before Stephen King made horror a national pastime, Shirley Jackson was producing macabre classics like ''The Lottery'' and The Haunting of Hill House, with their chilling explorations of evil lurking just below the surface of daily life. When a carton of original manuscripts and unpublished stories left moldering in a Vermont barn turned up nearly 30 years after Jackson's death, two of her children assembled this fine new collection from it. Just an Ordinary Day includes lighthearted family chronicles as well as some of her darker tales. If it gets too scary, ''all you have to do is scream,'' as one of Jackson's characters advises a newlywed whose husband is trying to kill her. A



