imag = new Array();
            
// Home - menuSystem0
imag[0] = "images/homeOff.gif"; 
imag[1] = "images/homeOn.gif";
            
// Photos - menuSystem1
imag[2] = "images/photosOff.gif"; 
imag[3] = "images/photosOn.gif";
            
// Audio - menuSystem2
imag[4] = "images/audioOff.gif"; 
imag[5] = "images/audioOn.gif";
            
// Contact - menuSystem3
imag[6] = "images/contactOff.gif"; 
imag[7] = "images/contactOn.gif";

function switchIt(num, imgname) { 
  imgname.src = im[num].src; 
}
im = new Array();
for (var i = 0; i < imag.length; i++) { 
  im[i] = new Image(); 
	im[i].src = imag[i]; 
}