Repeat menu bar on every page?

[Walalayo]

I have created a menu bar that runs horizontally along the top of my website (not as a frame) and repeats across every webpage.

I was just wondering if it was possible to insert some shorter code that referenced a text file that contained the menu bar code so that I would not have to put my menu code on every page.

I'm thinking something in CSS might do it, but I'm not sure.

Thanks.