number = new Array(3);

number[0] = "0";
number[1] = "1";
number[2] = "2";
/*number[3] = "3";*/

index = Math.floor(Math.random() * number.length);

imageA = "<img src='a" + index + ".jpg'>"
imageB = "<img src='b" + index + ".jpg'>"
imageC = "<img src='c" + index + ".jpg'>"
imageD = "<img src='d" + index + ".jpg'>"
imageE = "<img src='e" + index + ".jpg'>"