N

Navigation button

A graphic image, generally in a GIF or JPEG format, that links to a single URL.

noframes

An element commonly used on framed pages. Content placed between the <noframes> and </noframes> tags display when a browser does not support frames or is configured not to display frames. Because almost all browsers support frames , search engines either ignore or place low weight on the content inside the <noframes> tags.

noscript

If a browser does not support a scripting language or if an end user has disabled client-side scripting in a browser, content between the <noscript> and </noscript> tags is displayed. This element enables web developers to display alternative content in the event a script is not executed.