A court in Burma has rejected an appeal for the release of detained democracy leader Aung San Suu Kyi. Her lawyers say they will appeal to a higher court.<br/>Lawyers for Aung San Suu Kyi say a district court in Rangoon Friday rejected their appeal for her release.<br/> <br/>The democracy activist's lawyers had argued that the laws she was sentenced under are based on a defunct constitution and are therefore invalid.<br/> <br/>In August, a court sentenced Aung San Suu Kyi to 18 months house arrest for allowing an uninvited American man to stay at her home without official permission. <br/>