The expansion of web technologies pushes human activities over methodologies and software that could ease reactions by means of software transactions. Distribution of human and software agents over the web and their operation under dynamically changing conditions necessitate the need for dynamic intelligent environments. Electronic institutions can play an "umbrella" role for agents' transactions, where institutions' norms could protect and support movements and decisions made through negotiations. However, dynamic information provision may force changes in structures and behaviors, driving electronic institutions' adaptation to changing needs. Viewing negotiation structures as electronic institutions, this paper investigates the impact of a dynamically changing environment to negotiations' electronic institutions.