/**********************************************
** Random campaign script
** Ian Kelleigh
**
** Can be used for bottom campaigns or
** right campaigns. Just make sure to keep
** the images all in the campaigns directory
**********************************************/

function randomCampaignBottom (imageArray, campaignURL) {
	var campaignLength = imageArray.length; // Number of alternative images
	function pickRandom (campaignLength) {
    	if (Math.random) return Math.round(Math.random() * (campaignLength - 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 (campaignLength); // -->
    document.writeln('<a href="' + campaignURL + '" target="_blank"><IMG SRC="/_images/campaigns/' + imageArray[choice] + '" alt="We Are a lot Like You" border="0" ></a>');
}