I wrote on another post about how to put Adsense on a web page that is not quite finished yet. There are lots of uses for this. This is really useful for developers that release code and don’t want their adsense account put at risk on every site (thought they may do that to try to increase earnings but this is a really short term solution).

Anyway. I am sure you know the reasons for this. Google does not want you to put their script on a site that is not done. But you need it there to help with the layout. One solution is to use a graphic the size of the ad block. The other is to use this code. Just change the dimensions to fit your need.

<script type="text/javascript"><!--
google_adtest = "on";         // new line
google_ad_client = "pub-0000000000000000";
google_alternate_color = "ffffff";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_type = "text_image";
google_ad_channel = "0000000000";
//--></script>
<script type="text/javascript"
  src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>