Including Functions

My question has to do with including .asp pages inside of .asp pages. More specifically, today I create one file called aspfunctions.asp that I include on all my pages. I build all of my functions in that one page.

For ease of use, I want to take a different approach and make a new file for each function. I would then only include the function on a page if I needed to use it.

Instead of aspfunctions.asp, I would have function1.asp, function2.asp, etc.

So my question is - does the volume of .asp includes on a page affect the time it takes for pages to load? By going from a single .asp include on each page to multiple .asp includes, is my page load speed likely to be affected?

Another form of the question: Do .asp includes cause the same additional http calls as images, .js, .css, and the like?