Milonic JavaScript Menu

Is it possible to lock a menu to a specific area within a page, even if the resolution changes?

This is my dilemma; my menu is correctly positioned when my resolution is 800x600. However, when I switch the resolution to 1024x768, my web page is centered on the page and my menu is on the left side of the screen according to the coordinates I specified within the menu_data.js file.

Is there a ...

I have tried that. The code I have is as follows on all subsequent pages to my home page:

<!--#include file="/header.txt" -->

However, once I load the page I receive the following error at the top of my page where my header should be placed:

[an error occurred while processing this directive ...

I recently created SSIs on my home page however when I reference them in subpages they do not follow.

What is the proper code for referencing a SSI from a single directory throughout my site.

I have created

<!--#include file="header.txt" -->

However, it only works in one directory, is it ...