An integrated protective apparatus extruded from a PVC material for semi-rigidly attaching a planar protective element to a lens assembly and chassis in a projection television. A PDA includes forced layer switching capabilities. The targets include selected ones of the resources. The guiding device is mounted in the base seat, which has guiding portions and outlets thereon for spreading the gas injected from the gas mixing tube in the base seat equally. Many of these silver dimer compounds can be represented by the following Structure I: . In some implementations, the button may be configured to selectively make contact with the support pole of the static discharge station.