function getNumberOfLemmingsSaved(fnCallback) {
		oOpa5.waitFor({
			id: "num-lemmings-saved",
			success: function(oLabel) {
				var sNumberOfLemmingsSaved = oLabel.getText().match(/Number of lemmings saved: (\d+)/)[1];
				var iNumberOfLemmingsSaved = parseInt(sNumberOfLemmingsSaved);
				fnCallback(iNumberOfLemmingsSaved);
			}
		});
	}
@param {function} fnCallback - executed once the number of lemmings saved is determined.
																Receives one parameter: "iNumberOfLemmingsSaved"