var randnum = Math.random();
var inum = 11;
// Change this number to the number of images you are using.
var rand1 = Math.round(randnum * (inum-1)) + 1;
images = new Array
images[1] = "images/bg1.jpg"
images[2] = "images/bg2.jpg"
images[3] = "images/bg3.jpg"
images[4] = "images/bg4.jpg"
images[5] = "images/bg5.jpg"
images[6] = "images/bg6.jpg"
images[7] = "images/bg7.jpg"
images[8] = "images/bg8.jpg"
images[9] = "images/bg9.jpg"
images[10] = "images/bg10.jpg"
images[11] = "images/bg11.jpg"

// Ensure you have an array item for every image you are using.
var image = images[rand1]
// Deactivate cloaking device -->