var randnum = Math.random();
var inum = 4;
var rand1 = Math.round(randnum * (inum-1)) + 1;
images = new Array
images[1] = "/img/home-photo3.jpg"
images[2] = "/img/home-photo4.jpg"
images[3] = "/img/home-photo1.jpg"
images[4] = "/img/home-photo2.jpg"
var image = images[rand1]