Refresh code in a div container every ten seconds

[sparklywater]

I found this script which works with text content within a div:

PHP Code:

<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script language="JavaScript">
setInterval( "SANAjax();", 3000 );  ///////// 10 seconds
 
$(function() {
SANAjax = function(){
 
$('#dataDisplay').prepend("<b>hellooo</b><br />").fadeIn("slow");
 
}
 });
</script>

<div id="dataDisplay"></div> 


However, if I replace the 'prepend' part with google's adsense code, then the script does not work:

PHP Code:

<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script language="JavaScript">
setInterval( "SANAjax();", 3000 );  ///////// 10 seconds
 
$(function() {
SANAjax = function(){
 
$('#dataDisplay').prepend("<script type="text/javascript"><!--
google_ad_client = "pub-1792173455781931";
/* Leaderboard (General) 728x90 */
google_ad_slot = "2505528282";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>").fadeIn("slow");
 
}
 });
</script>

<div id="dataDisplay"></div> 


I have tried using single quotes in the prepend brackets instead of double quotes, and also tried backlashing all the double quotes in the google code with a ( \ ), but neither case works. Any help would be appreciated.