// JavaScript Document
// check to see if referrer is google
var urlRef = document.referrer;
var gUrl = "www.google.";
var isSearch = urlRef.indexOf(gUrl);
var i= Math.floor(Math.random()*5);
// if referrer not google, change to image 6
if (isSearch < 0 ) {
	i = 6;
}
// display the image
imgSrc = 'http://www.ualberta.ca/signature/images_home/' + signature.items[i].image;
imgLink = signature.items[i].url;
imgAlt = signature.items[i].alt;
document.write('<a href="'+imgLink+'" onclick="ct(\'/click/signature/'+signature.items[i].url+' Click ualberta Image\',\'/goal/ualberta/signature/\');">');
document.write('<img src="'+imgSrc+'"'+' alt="'+imgAlt+'"></a>');