<HEAD> | NN all IE all HTML all
<HEAD>...</HEAD> | End Tag: Optional
The HEAD element contains document information that is generally not rendered as part of the document in the browser window. At most, the TITLE element affects what the user sees when a browser displays its content in the browser window's titlebar. Content of the HEAD element consists entirely of other elements that are intended to assist the browser in working with document data. Another classification of data, handled in one or more META elements, can also assist search engines and document parsers to learn more about the document based on abstract information supplied by the author. The following table shows the elements that may be nested inside a HEAD element according to three different specifications.
Element | NN 4 | IE 4 | HTML 4.0
    BASE
| * | * | *
    BASEFONT
| * | * | -
    BGSOUND
| - | * | -
    ISINDEX
| * | - | *
    LINK
| * | * | *
    META
| * | * | *
    NEXTID
| - | * | -
    SCRIPT
| * | * | *
    STYLE
| * | * | *
    TITLE
| * | * | *
Example
    <HEAD>
    <META NAME="Author" CONTENT="Danny Goodman">
    <STYLE TYPE="text/css">
        H1 {color:cornflowerblue}
    </STYLE>
    </HEAD>
Object Model Reference
IE | [window.]document.all.elementID

CLASS | NN n/a IE 4 HTML n/a
CLASS="className1[ ...classNameN]" | Optional
An identifier generally used to associate an element with a style sheet rule defined for a class selector. See . The CLASS attribute makes no sense for the HEAD element because the attribute can't be assigned to a class style selector that has not yet been defined. (It gets defined later within the HEAD element.) This attribute appears to be in Internet Explorer for the sake of consistency, rather than genuine functionality.
Value Case-sensitive identifier. Multiple classes can be assigned by separating the class names with spaces within the quoted attribute value.
Default | None.
Object Model Reference
IE | [window.]document.all.elementID.className

ID | NN n/a IE 4 HTML n/a
ID="elementIdentifier" | Optional
A unique identifier that distinguishes this element from all the rest in the document. You can use this attribute value in Internet Explorer scripts as a way to reference the HEAD element by ID rather than by the longer document.all.tags("HEAD")[0] reference.
Example
    <HEAD ID="docHead">...</HEAD>
Value Case-sensitive identifier.
Default | None.
Object Model Reference
IE | [window.]document.all.tags("HEAD")[0].id [window.]document.all.elementID.id

PROFILE | NN n/a IE n/a HTML 4
PROFILE="URLList" | Optional
A meta data profile is a separate file (or browser built-in named definition) that defines one or more meta data property behaviors. In some ways, a profile is like a header for meta data whose properties are assigned in plain view within META elements inside a HEAD element. Future browsers and external systems (such as search engines) may use the profile information to extend the typical name/value assignments in META elements as implemented in Version 4 (and earlier) browsers.
Example
    <HEAD PROFILE="http://www.giantco.com/profiles/common">
        <META NAME="Author" content="Jane Smith">
        <META NAME="keywords" CONTENT="benefits,insurance,">
        ...
    </HEAD>
Value Any valid URL or browser profile constant.
Default | Browser default.

TITLE | NN n/a IE 4 HTML n/a
TITLE="advisoryText" | Optional
An advisory description of the element. Because the HEAD element does not display content in the browser window, there is no region of the screen to associate with the normal tooltip that displays TITLE attribute data. Do not confuse the TITLE attribute of a HEAD element with the TITLE element that is nested inside the HEAD element. The latter represents the title of the document that appears in the browser window's titlebar and can be used by document parsers to extract the title for indexing purposes.
Example
    <HEAD TITLE="Widget Price List">...</HEAD>
Value Any string of characters. The string must be inside a matching pair of (single or double) quotation marks.
Default | None.
Object Model Reference
IE | [window.]document.all.elementID.title