Banner Script (PHP or C compiled CGI)

I need a script that when someone clicks on a link from my site to leave or internally it adds a banner to the top of the page. so my site is [login to view URL] all the links will look like [login to view URL] Then when the user visited yahoo my banner would be on the top of the page of yahoo. I also want to disable the popup windows fo the sites. I have a sample site for someone to look at. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform UNIX apache