HTML Issue, Help Needed

[gcxboxps]

Is there some way where I can make my webpages automaticly update the columns where the links and etc. are stored?

Ex. On the left of my website you will find the navagation with all the links to different areas to the site there, and for each one of those areas of the site has its own layout. So if I where to add a new link to the main index(homepage) file, I would have to go back into every page that I have created with that same navagation to the left, and add that one or so links.

My question is, can I do something where, when I add a link to my navagation, it will automaticly be added to the rest of my webpages?

I know there should be a way to do this, so anyone's help will be great.

Thanks