var image1 = new Image();
image1.src = "assets/images/new-2x1.jpg";
var image2 = new Image();
image2.src = "assets/images/new-mo_2x1.jpg";

var image3 = new Image();
image3.src = "assets/images/new-2x2.jpg";
var image4 = new Image();
image4.src = "assets/images/new-mo_2x2.jpg";

var image5 = new Image();
image5.src = "assets/images/new-2x3.jpg";
var image6 = new Image();
image6.src = "assets/images/new-mo_2x3.jpg";

var image7 = new Image();
image7.src = "assets/images/new-2x4.jpg";
var image8 = new Image();
image8.src = "assets/images/new-mo_2x4.jpg";

var image9 = new Image();
image9.src = "assets/images/new-2x5.jpg";
var image10 = new Image();
image10.src = "assets/images/new-mo_2x5.jpg";

var image11 = new Image();
image11.src = "assets/images/new-2x6.jpg";
var image12 = new Image();
image12.src = "assets/images/new-mo_2x6.jpg";

var image13 = new Image();
image13.src = "assets/images/new-2x8.jpg";
var image14 = new Image();
image14.src = "assets/images/new-mo_2x8.jpg";

var image15 = new Image();
image15.src = "assets/images/new-2x9.jpg";
var image16 = new Image();
image16.src = "assets/images/new-mo_2x9.jpg";

var image17 = new Image();
image17.src = "assets/images/new-2x10.jpg";
var image18 = new Image();
image18.src = "assets/images/new-mo_2x10.jpg";

var image17 = new Image();
image17.src = "assets/images/new-2x11.jpg";
var image18 = new Image();
image18.src = "assets/images/new-mo_2x11.jpg";

var image19 = new Image();
image19.src = "assets/images/new-1x4.jpg";

var image20 = new Image();
image20.src = "assets/images/new-3x7.jpg";

function roll(img_name1, img_src1, img_name2, img_src2)
   {
   document[img_name1].src = img_src1;
   document[img_name2].src = img_src2;
   }