javascript src problem

We have a number of sites. All of the sites are directories in our wwwroot directory. There is also a template directory in the wwwroot directory that all of the sites pull their design from. I coded the page that uses the editor to have the javascript src="../../templateincludefiles/fckeditor/fckeditor.js. This is not working. But when I put the fckeditor directory within a site's actual directory and change the path to something like ../includes/fckeditor/fckeditor.js, it works fine. So, it appears that if I have the fckeditor directory located within a child directory of the wwwroot, it can't navigate backward enough to find it. Also, if this is a problem, then the basepath would obviously look in the same directory, so would that cause a problem? Thanks.