Therefore even inexperienced web designers without knowledge of the ideal HTML code to embed Flash content, can easily insert Flash content into web pages, and have them reliably work for the widest possible audience (excepting those with JavaScript disabled).

You may have disabled JavaScript on your browser or the security settings on your browser may stop JavaScript working.

JavaScript is another alternative, but not recommended, because users might have disabled JavaScript in their browsers.

Your browser may have disabled JavaScript, in which case you will have to enable it to properly use this website.

A further criterion of unobtrusive Javascript that is often cited is to ensure that added behavior degrades gracefully on those browsers with unexpected configurations, and those on which the user may have disabled JavaScript altogether.

You may have disabled JavaScript or your browser does not support JavaScript.