ML/HTML代码 
<div id="ad_thread3_$post[count]"></div><div id="ad_thread4_$post[count]"></div>    
上面添加 
 <!--{if $post[number]==1}--><div style="float:left">     
<script type="text/javascript"><!--      
google_ad_client = "pub-4741390588082798";      
/* 336x280, 创建于 08-2-21 */      
google_ad_slot = "3351928229";      
google_ad_width = 336;      
google_ad_height = 280;      
//-->     
</script>     
<script type="text/javascript"     
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">     
</script>