I thought I had posted this here before but can't find it.....sorry if repetitious

I have a css menu I've finally got to show in most browsers. Now I have about 300 html pages to insert it into. Messy.

Can this be done with a page caller as when a style sheet or javascript is called to a page?

If so, how? I'm on a Windows server.

Not ready to give up my html yet seeing all the cross-browser problems with php and css.