Does not work in subdirectory

[Holzhauer]

When the directive is used in a file stored in a subdirectory, the relative path to the static content as given in the template file is not working. The workaround is to edit the template (adding "../" for files on the level below the first) or to store all files which include the directive on first level.

An improved implementation should be possible as paths to standard sphinx js files are adapted automatically in HTML files.