I have b2evo v 0.9.0.10
I have pasted this type of ad sense code on main.php:
<script type="text/javascript"><!--
google_ad_client = "pub-4625823585878740";
google_ad_width = 234;
google_ad_height = 60;
google_ad_format = "234x60_as";
google_ad_type = "text_image";
google_ad_channel ="";
google_color_border = "B4D0DC";
google_color_bg = "ECF8FF";
google_color_link = "0000CC";
google_color_url = "008000";
google_color_text = "6F6F6F";
//--></script>
When this is posted on main.php the code gets displayed on all the blog pages. However I would like to make use of the Google ad sense channels. In short that would mean the same code above but with one more line of info on it, in other words, I would like to custom make the code for different categories. Is there a way to have the blog display custom code snippets like the above in different categories?

http://urbizzness.com/blogs/index.php is my blog