The invention discloses a method for a media server initiating fast content switching in a communication network. The compositions include both soluble and substantially insoluble lanthanide carboxylates, preferred examples being lanthanum glycolate and lactate. The location proxy server forwards the coarse location request for the mobile device to a location server. Each coil generates a magnetic field in a mutually orthogonal direction. More particularly, this invention is directed to an illumination system in which laser light is conveyed to a modulator, and the modulated laser light is passed through separating means to permit only the passage of zero order radiant energy which is employed to image the media.