📃 October 2006 release notes

New in Firefox

The following features are now available in Firefox:

• Device media queries: The device-aspect-ratio, device-height, and device-width media features describe physical properties of the displaying output device.
• window.external: The window.external.AddSearchProvider() and window.external.IsSearchProviderInstalled() do nothing. Historically, they added external search providers to the browser.
• <link rel="prefetch">: The rel="prefetch" attribute for the <link> HTML element is a hint to the browser that the user is likely to navigate to a resource, so the browser should preemptively fetch and cache the resource.
• registerProtocolHandler: The navigator.registerProtocolHandler() method declares a site's ability to handle an address scheme (also known as a protocol). For example, an email site can register to open mailto: URLs or a VoIP site to open tel: URLs.
• spellcheck: The spellcheck global HTML attribute sets whether the browser may check an element for spelling errors.