Banner implementation for 20 websites

We are looking for a experienced coder who can implement a banner source code (directed from Open X admanagement system) into 20 different websites. The 20 websites are all much the same like: [login to view URL] or [login to view URL] The banner will be visible outside the existing frame of the website, so the website itself should not have to be redesigned. The banner should be visible in every subpage of the website. The banner coder will be for a Skyscraper or Leaderboard banner, depending on the structure of the website.