The present invention provides a system and method for mounting an electrical device on a wall. Furthermore, a preferred process for the preparation of phthalic anhydride is described. The present invention provides a device useful for the prevention of tooth damage occurring with common laryngoscopes and other airway intubation systems. The wiring material includes a portion in direct contact with the electrode and thus electrically connects the plurality of solar cells with each other. A communication link may be a two-way real-time interaction between users of different forums or simply automated responses using messages stored in a database and associated with the linked forum.