NICE FAQ Script

User agents must calculate the base URI for resolving relative URIs according to [RFC1808], section 3. The following describes how [RFC1808] applies specifically to HTML.

User agents must calculate the base URI according to the following precedences (highest priority to lowest):

1. The base URI is set by the BASE element.
2. The base URI is given by meta data discovered during a protocol interaction, such as an HTTP header (see [RFC2616]).
3. By default, the base URI is that of the current document. Not all HTML documents have a base URI (e.g., a valid HTML document may appear in an email and may not be designated by a URI). Such HTML documents are considered erroneous if they contain relative URIs and rely on a default base URI.

Additionally, the OBJECT and APPLET elements define attributes that take precedence over the value set by the BASE element. Please consult the definitions of these elements for more information about URI issues specific to them.