BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described with reference to the drawings, in which
FIG. 1 is a block diagram of a first preferred embodiment of the monitoring system of the invention;
FIG. 2 is a flowchart of a first preferred embodiment of the method of the invention;
FIG. 3 is a block diagram of a second preferred embodiment of the monitoring system of the invention; and
FIG. 4 is a flowchart of a second preferred embodiment of the method of the invention.