<!--
var image1 = new Image();
image1.src = "images/button01a.jpg";
var image2 = new Image();
image2.src = "images/button01b.jpg";
var image3 = new Image();
image3.src = "images/button02a.jpg";
var image4 = new Image();
image4.src = "images/button02b.jpg";
var image5 = new Image();
image5.src = "images/button03a.jpg";
var image6 = new Image();
image6.src = "images/button03b.jpg";
var image7 = new Image();
image7.src = "images/button04a.jpg";
var image8 = new Image();
image8.src = "images/button04b.jpg";
var image9 = new Image();
image9.src = "images/button05a.jpg";
var image10 = new Image();
image10.src = "images/button05b.jpg";
function roll(img_name, img_src)
   {
   document[img_name].src = img_src;
   }
//-->