AREA
Used to define an image map in the client browser which indicates an area where the client can click to link to another document. For example:
<AREA SHAPE="CIRCLE" COORDS="x1,y1,x2,y2" HREF="www.WalkTheGeek.com">
AREA Attributes:
ALT=" ... "
This attribute will display alternate text if the function called by this attribute is not available or is not supported.
CLASS=" ... "
This attribute indicates the style 'class' applicable to the tag to which it has been assigned, the style 'class' being a function of a style sheet. For example, assume the style class 'relaxed' includes text with a font size of 8, and the style class 'active' includes text with a font size of 12. Using the CLASS="relaxed" attribute with a tag will cause the text within that tag to be displayed with a font size of 8. Using the CLASS="active" attribute with a tag will cause the text within that tag to be displayed with a font size of 12.
COORDS="X1,Y1,X2,Y2"
This attribute defines a clickable area within a document. The co-ordinates are measured in pixels from the top left corner of the document.
HREF="URL"
This attribute is used to specify the location of a relative or absolute location (URL) of a file to which you want to provide a hyperlink. A hyperlink can point to a different document, another location within the same document, or to any image or program file the browser or operating system supports.
ID=" ... "
The ID attribute is used to assign a unique ID selector (identification) to the tag in which it is invoked. A style may be assigned to that ID, which will effect only that one instance of the attribute.
NOHREF
This attribute specifies that the image map it is used with doesn't have a hyperlink attached to it.
NOTAB
This attribute will cause the image map to be passed over when tabbing. That is, the image map will be removed from the tabbing order regardless of any existing TABINDEX="n" attributes.
SHAPE="RECT, CIRCLE, or POLY"
STYLE=" ... " Used to specify which style sheet commands to apply to the instance of the STYLE attribute invoked within the tag.
TABINDEX="n"
This attribute defines the 'tabbing order' of the document. For example, assume a document has ten fields, numbered one to ten, which require your input. The first field, with TABINDEX="1", is the active field. Pressing the tab key would move the cursor to TABINDEX="2", regardless of its physical location within the document.
TARGET=" ... "
This attribute indicates the name of the frame in which the linked document, image, or program file will be loaded. Frame names are defined with the FRAME tag.
TITLE= " ... "
The TITLE attribute is used to display a note or information in a popup window pertaining to the object to which it was assigned. The popup window is invoked by holding the mouse pointer over the object.
This tag also accepts the following Event Handlers:

onBlur
onClick
onDblClick
onDragStart
onFocus
onHelp
onMouseDown
onMouseUp
onMouseOver
onMouseMove
onMouseOut
onKeyPress
onKeyDown
onKeyUp
onSelectStart