yes, and do you know what this kind of web page is called? a server side dynamic web page. do you know what the one in the OP most likely is? a client side web page
first of all, there's no such thing as a client-side web page. secondly, CGI is server-sided (edit: well, not exactly. it's how to client interacts with the server. but anyway, it's still on the server (second edit: wait no, it's how the server interacts with the software on it. so yes, it's entirely server-side)). like PHP, which this forum runs on