An air cleaner includes an upper casing, a lower casing, and a filter element, which is located inside the upper casing and the lower casing. A system for voting also includes a centralized computer and voter registration database. In the invention, this active display area is divided into at least first and second display areas, a visual output of said first and second display areas being separately driven. The composite content listed is broadcast to client systems, which in turn, provide ratings for the service provider and broadcast service content described by the composite content list. One or more of thin-film components is formed by depositing a thin-film in the trench followed by processing the deposited thin-film to have the desired thickness.