avatator,
А нафег тег <script type="text/javascript"><!-- внутри скрипта ?

<div id="write_1"></div>

<script>
var storWRT = document.write
document.write = function(str){ //Иная функция вывода
 document.getElementById('write_1').innerHTML = str;
}
google_ad_client = "pub-3727717386447886";
/* Left Skyscraper 120x600, created 3/14/10 */
google_ad_slot = "4012594297";
google_ad_width = 120;
google_ad_height = 600;
</script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
<script>document.write = storWRT</script>