Coloca tu código así y no lo pongas todo en la misma linea:
Código:
<p align="center">
<script type="text/javascript"><!--
google_ad_client = "pub-9882336965327079"; google_ad_width = 468; google_ad_height = 60; google_ad_format = "468x60_as"; google_ad_channel =""; google_color_border = "336699"; google_color_bg = "FFFFFF"; google_color_link = "0000FF"; google_color_url = "008000"; google_color_text = "000000";
//--></script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script></p>