where to add include file so that it can be seen by other files in app?

[Cristina Constantinescu]

Hi,

I want to use include directive to add files into my application.
Where should I put them in order to be seen in the entire app?

I've tried in a class like this:
package org {

    public class Test    {
        public function Test() {
        }
    }
    include "myFile.js";
}

but "A file found in a source-path can not have more than one externally 
visible definition.".

Thanks,
Cristina