//store the photos in arrays

//Declare Array to store the images **Note that the Area Number needs to be updated with every new image!**.
BillboardImage= new Array(1);

//Specify what each item in the aray will be

BillboardImage[0] = "<a href='/work/brookings.shtm'><img src='/i/brookings-billboard.jpg' alt='The Brookings Institution Sitecore Implementation - Click for More' title='The Brookings Institution Sitecore Implementation - Click for More' width='790' height='400' /></a>"; //Brookings

BillboardImage[1] = "<a href='/work/commonwealth.shtm'><img src='/i/cwf-billboard.jpg' alt='The Commonwealth Fund's Sitecore and Datacenter integration - Click for More' title='The Commonwealth Fund&rsquo;s Sitecore and Datacenter integration - Click for More' width='790' height='400' /></a>";//Commonwealth Fund

//End Specification Area

//calculate a random index
index = Math.floor(Math.random() * BillboardImage.length);

//display the image
document.write(BillboardImage[index]);