var image1 = new Image();
image1.src = "images/c4h.jpg";
var image2 = new Image();
image2.src = "images/c5.jpg";
var image3 = new Image();
image3.src = "images/a1.jpg";
var image4 = new Image();
image4.src = "images/a2.jpg";
var image5 = new Image();
image5.src = "images/a3.jpg";
var image6 = new Image();
image6.src = "images/a4.jpg";
var image7 = new Image();
image7.src = "images/a4ch-temp.jpg";
var image8 = new Image();
image8.src = "images/a4mb-temp.jpg";
var image9 = new Image();
image9.src = "images/a4pg-temp.jpg";
var image10 = new Image();
image10.src = "images/a4sl-temp.jpg";
var image11 = new Image();
image11.src = "images/a4vh-temp.jpg";
var image12 = new Image();
image12.src = "images/a4wb-temp.jpg";
var image13 = new Image();
image13.src = "images/a5.jpg";
var image14 = new Image();
image14.src = "images/b1.jpg";
var image15 = new Image();
image15.src = "images/b2.jpg";
var image16 = new Image();
image16.src = "images/b2h.jpg";
var image17 = new Image();
image17.src = "images/b3.jpg";
var image18 = new Image();
image18.src = "images/b4.jpg";
var image19 = new Image();
image19.src = "images/b4h.jpg";
var image20 = new Image();
image20.src = "images/b5.jpg";
var image21 = new Image();
image21.src = "images/b5h.jpg";
var image22 = new Image();
image22.src = "images/c1.jpg";
var image23 = new Image();
image23.src = "images/c1h.jpg";
var image24 = new Image();
image24.src = "images/c2.jpg";
var image25 = new Image();
image25.src = "images/c3.jpg";
var image26 = new Image();
image26.src = "images/c3h.jpg";
var image27 = new Image();
image27.src = "images/c4.jpg";

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