function loadImages () {
   image01 = new Image();
   image01.src = "images/n193kb/N193KB_roll.jpg";
   image02 = new Image();
   image02.src = "images/n3139w/N3139W_Splash.jpg";
   image03 = new Image();
   image03.src = "images/n6914c/N6914C_4_roll.jpg";
   image04 = new Image();
   image04.src = "images/n3961l/N3961L_roll.jpg";  
   image05 = new Image();
   image05.src = "images/n5263a/N5263A_Roll.jpg";	
	
   }

function changeImage (indexNum) {
   if (indexNum == 1) document.images.canvas.src="images/n193kb/N193KB_roll.jpg";
   if (indexNum == 2) document.images.canvas.src="images/n3139w/N3139W_Splash.jpg";
   if (indexNum == 3) document.images.canvas.src="images/n6914c/N6914C_4_roll.jpg";
   if (indexNum == 4) document.images.canvas.src="images/n3961l/N3961L_roll.jpg";
   if (indexNum == 5) document.images.canvas.src="images/n5263a/N5263A_Roll.jpg";		

   }

function changeBack () {
   document.images.canvas.src="images/n5263a/N5263A_Roll.jpg";
   }