fnChangeVisibility = function(that) {
			var bShouldBeVisible = that.hasItems();
			var sStatus = that.getVisibleStatus();

			if (bShouldBeVisible && sStatus === "None") {
				return true;
			} else if (!bShouldBeVisible && sStatus !== "None") {
				return true;
			} else if (!bShouldBeVisible && sStatus !== "Min") {
				return true;
			} else {
				return false;
			}

		}
Internal control that renders a single message for the NotificationBar
corresponding to its needs