This one works great you can ad as many as ya want,just copy and paste them they change when the page refreshs
<!-- ONE STEP TO INSTALL BANNER ADS:
1. Add the first code to the BODY of your HTML document -->
<!-- STEP ONE: Add the first code to the BODY of your HTML document -->
<BODY>
<SCRIPT LANGUAGE="JavaScript">
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
var how_many_ads = 3;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt="The World's Largest Online Bookstore, Amazon.com";
url="http://www.amazon.com";
alt="amazon.com";
banner="http://imageserv.imgis.com/images/Ad12669St1Sz1Sq1_Ban1.gif";
width="468";
height="60";
}
if (ad==2) {
txt="Palm III by 3Com, in stock!";
url="http://cybershop.com/";
alt="cybershop.com";
banner="http://imageserv.imgis.com/images/Ad13189St1Sz1Sq5_Ban10.gif";
width="468";
height="60";
}
if (ad==3) {
txt="Find it at GoTo.com";
url="http://www.goto.com";
alt="goto.com";
banner="http://imageserv.imgis.com/images/Ad13700St1Sz1Sq1_Ban1.gif";
width="468";
height="60";
}
document.write('<center>');
document.write('<a href=\"' + url + '\" target=\"_top\">');
document.write('<img src=\"' + banner + '\" width=')
document.write(width + ' height=' + height + ' ');
document.write('alt=\"' + alt + '\" border=0><br>');
document.write('<small>' + txt + '</small></a>');
document.write('</center>');
// End -->
</SCRIPT>
<p><center>
<font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>
<!-- Script Size: 1.44 KB -->