A moveable soffit cover system includes a guide track for connecting to a structure adjacent a soffit panel having a plurality of vents formed therein, and a soffit vent cover slidably connected to the guide track to overlie the soffit panel. The invention also relates to pharmaceutical formulations of said compounds, methods of treatment using said compounds and to processes for the preparation of said compounds. Consequently, in the course of the fabrication of the anti-fog element, any alkaline substance is difficult to be dispersed into the photocatalyzer film and, thus, even if a soda lime glass is used as the substrate, no film for preventing the alkali dispersion is required.