So I'm using WordPress at work to create a newsletter type blog. There would only be one post per month really. However, we have about 4 different ads in our header. They're just JPGs with URLs to link to the advertiser's page, think of it as one long banner but split up.
Anyway, we need these ads to be tied to the specific post. For example the November entry would need ads A, B, C, and D to show. But the December post needs to display ads A, Z, Y, and X.
Is this possible? I was reading elsewhere before and somebody mentioned a PHP script may work. I haven't dealt with PHP in a while, so I definitely can't make something up by myself. Currently the ads are in our header, however I can't seem to figure out how to make the header change when on a specific post. Is that possible at all?
Any help with this would be very much appreciated.