Analog Watching for image changes

gistfile1.js

//Image Array
var Images = new Array();
Images[0] = "image00.png";
Images[1] = "image01.png";
Images[2] = "image03.png";
Images[3] = "image02.png";

function ImageChange(join, value) {
	var nJoin = join.substr(1); 							// strip the "a" from the join string to just get the join number.
		CF.setJoin("s" + nJoin, Images[value]);				// set the serial value with an image.
}

// Common function that receives the join changes we watch
function onAnalogJoinChange(join, value) {
	var nJoin = join.substr(1);
	var nValue = parseInt(value);
	
	CF.log("Set Unwatch");
	CF.unwatch(CF.JoinChangeEvent, IMAGE_parameters);

	IMAGE_parameters = [];

		if(nValue == 0)
		{	
			CF.log("Set00 Watch");
		
			IMAGE_parameters = [];
		}	
		if(nValue == 1)
		{	
			CF.log("Set01 Watch");
				IMAGE_parameters = ["a101", "a102", "a103", "a104", "a105", "a106"];
		}	
		if(nValue == 2)
		{	
			CF.log("Set02 Watch");
				IMAGE_parameters = ["a201", "a202", "a203", "a204", "a205", "a206"];
		}	

	CF.log("Set Watch");
	CF.watch(CF.JoinChangeEvent, IMAGE_parameters, ImageChange);
	
	CF.log("Hardware Change End");
}

var IMAGE_parameters = ["a8"];

// Only use one userMain function in your project. So if you have multiple scripts that need to do setup on startup,
// group all startup code into the one userMain function in any script.
CF.userMain = function () {
	CF.log("Main");
	// Watch the source type selection
    CF.watch(CF.JoinChangeEvent, IMAGE_parameters, onAnalogJoinChange);
};