iimgindx = new Array(3);
iimgindx[0] = '<a href="http://www.archiedigital.com/sign-up/"><img alt="Archie Comics Image" src="http://www.archiecomics.com/public/s/img/2009/archie_digital_banner_ok.jpg"/></a>';
iimgindx[1] = '<a href="http://archiecomics.stores.yahoo.net/armave6suar6.html"><img alt="Archie Comics Image" src="http://www.archiecomics.com/public/s/img/2009/archie_600_banner_archie_marries_veronica.jpg"/></a>';
iimgindx[2] = '<a href="http://archiecomics.stores.yahoo.net/temunitust.html"><img alt="Archie Comics Image" src="http://www.archiecomics.com/public/s/img/ads/banners/2009/turtles_billboard.jpg"/></a>';

imynum = Math.floor(Math.random() * iimgindx.length);
document.write(iimgindx[imynum]);