// JavaScript Document
// Number of alternative images 

var ic = 4; 
var image = new Array(ic); 

// Array to hold filenames 

image[0] = "http://www.hull-lighting.co.uk/pics/updated_images/refresh_images/brilliant.jpg"; 
image[1] = "http://www.hull-lighting.co.uk/pics/updated_images/refresh_images/dazzling.jpg";  
image[2] = "http://www.hull-lighting.co.uk/pics/updated_images/refresh_images/sparkling.jpg";  
image[3] = "http://www.hull-lighting.co.uk/pics/updated_images/refresh_images/gleaming.jpg";  

function pickRandom(range) 

{ if (Math.random) return Math.round(Math.random() * (range-1)); 

else { var now = new Date(); return (now.getTime() / 1000) % range; } } 

// Write out an IMG tag, using a randomly-chosen image name. 

var choice = pickRandom(ic);