Adsense within javascript

[triumph]

I a run weblog which uses adsense. Currently, I have skyscraper ads on the side, but I want switch to inline ads between the fourth post and fifth post. I found a hack that does this using PHP, but my weblog app only handles javascript. I've got most of the code worked out. I've gotten the program to place a message at every 4th post, however I can't seem to insert adsense code.. Here is the code:

<SCRIPT Language="JavaScript">
var googlead
googlead = 0
</SCRIPT>
<blog post>
if(googlead == 5){
document.write("<script type="text/javascript"><!--
google_ad_client = "pub-********xxxxxxxxxx";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_channel ="test";
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>")
}
</script>
</blog post>

<SCRIPT Language="JavaScript">
googlead++
</SCRIPT>

BTW, I have no programming experience, so please be nice.. If I replace the Adsense code with some test text, it works fine.

Any help would be appreciated.

[HughMungus]

What do you mean you can't insert the code? Do you mean you can insert it but nothing shows up? What does show up? Can you use an include, instead?

[triumph]

Sorry. "Nothing shows up" means the screen is blank when I enter the adsense code.

Not sure how to use an include..

[IanCP]

Do a Google search on:

"server side include+tutorial"

And look out for:

BigNoseBird.Com's Server Side Include Page ( SSI)

[HughMungus]

You might also try asking the people who run your weblog how you might make that work.

[triumph]

It's hosted service called typepad.. It's basically movabletype except they host it.

[peterinwa]

Be careful. If you change a single character of Google's AdSense code you can be dropped from their program. And for good reason.

Peter