Koral Brothers Inc., a Southampton building contractor that concentrates on high-end residential construction, has updated its website, www.koralbros.com, to showcase its building projects.?Intended for the architectural community, designers and the general public, the website features a selection of the houses built by the firm since its founding in 1920. The site also provides the company’s history complete with vintage photographs and a profile of services and divisions. For more information contact Bill Koral, the company’s president, at 283-0033, or via e-mail, at firstname.lastname@example.org. ?