Ron C

I have been calling up http://www.w3schools.com/lib/w3data.js to create a navigation bar across the top of a page with drop down menus. The navigation bar is no longer displayed. With Firefox, the navigation bar is not displayed when I call up the site from the server or from my hard disk. With Miscrosoft Edge, the navigation bar is displayed when I call up the site from my hard disk, but not from the server. Any ideas ?