Question Add adbrite ads inside kunena forum

Hi,
I am trying to add adbrite ads in between the post and its replies. Earlier i was successful in getting the google ads displayed, however whenever google ad doesnt get displayed i want the adbrite ad to be displayed.
My website is:
www.cinemagrounds.com

How can i achieve this.
Earlier, i achieved this by adding the following code in view.php file of the template.
// Google AdSense ---> start
if ( $mmm == 1 ) {
echo '<div align="center">'."\n";
echo '<script type="text/javascript"><!--' . "\n";
echo 'google_ad_client = "pub-5023421363133063";' . "\n";
echo "/* my second ad link unit 120x90, created 4/22/10 */\n";
echo 'google_ad_slot = "0632638656";' . "\n";
echo "google_ad_width = 468;\n";
echo "google_ad_height = 60;\n";
echo "//-->\n";
echo "</script>\n";
echo '<script type="text/javascript"' . "\n";
echo 'src=" pagead2.googlesyndication.com/pagead/show_ads.js ">' . "\n";
echo "</script>\n";
echo "</div>\n";
}
// Google AdSense ---> end




Now i want to add adbrite code to the kunena forum, how can i do this:
Here is the ad code that i got from Adbrite:

<!-- Begin: AdBrite, Generated: 2010-07-20 20:20:24 -->
<script type="text/javascript">
var AdBrite_Title_Color = '0000FF';
var AdBrite_Text_Color = '000000';
var AdBrite_Background_Color = 'FFFFFF';
var AdBrite_Border_Color = 'CCCCCC';
var AdBrite_URL_Color = '008000';
try{var AdBrite_Iframe=window.top!=window.self?2:1;var AdBrite_Referrer=document.referrer==''?document.location:document.referrer;AdBrite_Referrer=encodeURIComponent(AdBrite_Referrer);}catch(e){var AdBrite_Iframe='';var AdBrite_Referrer='';}
</script>
<script type="text/javascript">document.write(String.fromCharCode(60,83,67,82,73,80,84));document.write(' src=" ads.adbrite.com/mb/text_group.php?sid=17...='+AdBrite_Referrer+ '" type="text/javascript">');document.write(String.fromCharCode(60,47,83,67,82,73,80,84,62));
<div><a target="_top" href=" www.adbrite.com/mb/commerce/purchase_for...opid=1702810&afsid=1 " style="font-weight:bold;font-family:Arial;font-size:13px;">Your Ad Here