var rand_no = Math.random();

  document.write('<iframe width="'+adgoing_ad_width+'" height="'+adgoing_ad_height+'" scrolling="no" frameborder="0" name="aframe" id="aframe" src="http://www.adgoing.com/delivery/show_ads.php?client='+adgoing_ad_client+'&slot='+adgoing_ad_slot+'&width='+adgoing_ad_width+'&height='+adgoing_ad_height+'&r='+rand_no+'" hspace="0" vspace="0" marginheight="0" marginwidth="0"></iframe>');