rnd.today=new Date();
rnd.seed=rnd.today.getTime();

function rnd() {
  rnd.seed = (rnd.seed*9301+49297) % 233280;
  return rnd.seed/(233280.0);
};

function rand(number) {
  return Math.ceil(rnd()*number);
};

var number=rand(20)-1
var ads = new Array(20);
//ads[0]=['someurl','someimage'];
ads[0]=['http://www.cafepress.com/startrek','cafepress-468x60.gif'];
ads[1]=['http://www.startrek.com/startrek/view/store/index.html','commerce_468x60.gif'];
ads[2]=['http://www.startrek.com/startrek/view/community/polls/index.html','poll_468x60.gif'];
ads[3]=['http://www.startrek.com/startrek/view/store/downloads/desktops.html','desktops_468x60.gif'];
ads[4]=['http://www.startrek.com/startrek/view/series/DS9/index.html','ds9_468x60.gif'];
ads[5]=['http://www.startrek.com/startrek/view/series/VOY/index.html','voy_468x60.gif'];
ads[6]=['http://www.startrek.com/startrek/view/library/index.html','library_468x60.gif'];
ads[7]=['http://www.startrek.com/startrek/view/help/link/index.html','linktous_promo_468x60.gif'];
ads[8]=['http://www.startrek.com/startrek/view/store/vendor/article/5179.html','mbna_banner_468x60.gif'];
ads[9]=['http://www.startrek.com/startrek/view/community/message.html','messageboards-468x60.jpg'];
ads[10]=['http://www.startrek.com/startrek/view/series/MOV/index.html','movies_468x60.gif'];
ads[11]=['http://reg.startrek.com/registration/startrek/reg.jsp','newsletter_468x60.gif'];
ads[12]=['http://reg.startrek.com/registration/startrek/reg.jsp','newsletter2-468x60.gif'];
ads[13]=['http://www.startrek.com/startrek/view/community/polls/index.html','poll_468x60.gif'];
ads[14]=['http://www.startrek.com/startrek/view/community/reviews/index.html','rate-and-review_468x60.gif'];
ads[15]=['javascript:newWindow=window.open(\'/startrek/page/redirect/external?id=1501\', \'_blank\', \'width=348,height=460\'); newWindow.focus()','sitetour2_468x60.gif'];
ads[16]=['http://www.startrek.com/startrek/view/store/index.html','store-468x60.jpg'];
ads[17]=['http://www.startrek.com/startrek/view/series/TNG/index.html','tng_468x60.gif'];
ads[18]=['http://www.startrek.com/startrek/view/series/TOS/index.html','tos_468x60.gif'];
ads[19]=['http://www.startrek.com/startrek/view/series/VOY/index.html','voy_468x60.gif'];

//document.write('<a href="'+ads[number][0]+'"><img src="http://www.startrek.com/html/ads/468x60/'+ads[number][1]+'" alt="click here" border="0"></a>');

ord=Math.random()*10000000000000000;
document.write('<script language="JavaScript" src="http://ad.doubleclick.net/adj/banners.startrek.com/;dcopt=ist;sz=468x60;ord=' + ord + '?" type="text/javascript"><\/script>');