Techniques for facilitating the reuse of a browser-based thin client of a client-server application in a browser-independent context. The filter frame comprises a frame member configured to removably hold the light filter between the display head and the bezel. If the estimated laminar separation location is downstream of the first estimated transition, the first estimated transition is used to determine a spatial domain for running a turbulent flow model. When assembled, the drive pulley mounted on the second frame contacts the conveyor belt system causing it to tighten around the pulleys mounted on the first frame. The mattress further includes a padding layer disposed on the upper surface and a quilting layer disposed over the padding layer and having an exterior layer of a liquid resistant material, wherein the innerspring core padding layer and quilting layer are dimensionally adapted to be less than eight inches in height. The system includes a pair of linkages connected to the vehicle brake pedal; one is engaged to the return to neutral arm and the other is engaged to the brake of the drive device, so that actuation of the vehicle brake pedal first causes the return to neutral feature of the drive device to engage to reduce vehicle speed and eventually to return the device to the neutral position.