Darrell Webb had his work cut out for him when he took the helm of Jo-Ann Stores in July 2006. At the time, the specialty retailer of fabrics and crafts was going through a major slump. Jo-Ann (JAS) faced setbacks on a couple of fronts. For one, it wasn't getting an adequate return on its investment in the 100 large-format stores it had opened in the three years before Webb arrived, the chief executive says. In addition, when industry sales began