var pic = 1; 
var link = 1; 
var numpics = 3; 
day = new Date(); 
seed = day.getTime(); 
ran = parseInt(((seed - (parseInt(seed/1000,10) * 1000))/10)/100*numpics + 1,10); 

if (ran == (1)) 
{pic=("http://www.popcornfor2.com/bannerads/images/smithnjohn_ad1.gif");link=("http://www.smithnjohn.com")} 

if (ran == (2)) 
{pic=("http://www.popcornfor2.com/bannerads/images/ss2.gif");link=("http://forums.popcornfor2.com/index.php?showtopic=21284")}  

if (ran == (3)) 
{pic=("http://www.popcornfor2.com/bannerads/images/ss2.gif");link=("http://forums.popcornfor2.com/index.php?showtopic=21284")} 

document.write("<a href=\"" + link + "\" target=\"_blank\"><IMG SRC=\"" + pic + "\" WIDTH=\"468\" HEIGHT=\"60\" BORDER=\"0\"></a>")