<!-- Hide from old browsers

var images = new Array();
images[1] = "images/img1.jpg";
images[2] = "images/img2.jpg";
images[3] = "images/img3.jpg";

var imagenumber = images.length ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;

var image = images[rand1]; 
// -- End Hiding Here -->