A method of managing websites registered in a search engine in a search engine administration system includes receiving, by an interface module, website information on a website. The spring allows the mailbox to return to its initial position after being contacted by another item, such as a snowplow or the like to prevent permanent damage to the mailbox. Based on a given duty cycle, the fail-safe circuitry selects, actuates, deactuates, andor maintains in the actuated or unactuated state one or both of the first and second solenoid-controlled valves. The method may include performing at least a portion of a spinal surgical procedure using at least one of the surgical instruments positioned in at least one of the naturally occurring orifices of the human. The film coating’s transmissivity is varied, as a function of position, to compensate for variations in transmissivity exhibited by the display panel, thus resulting in substantially uniform image brightness across the surface of the CRT.