Index of Attributes 

Legend: Deprecated, Loose DTD, Frameset DTD

Name	Related Elements	Type	Default	Depr.	DTD	Comment
abbr	TD, TH	%Text;	#IMPLIED			abbreviation for header cell
accept-charset	FORM	%Charsets;	#IMPLIED			list of supported charsets
accept	INPUT	%ContentTypes;	#IMPLIED			list of MIME types for file upload
accesskey	A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA	%Character;	#IMPLIED			accessibility key character
action	FORM	%URI;	#REQUIRED			server-side form handler
align	CAPTION	%CAlign;	#IMPLIED	D	L	relative to table
align	APPLET, IFRAME, IMG, INPUT, OBJECT	%IAlign;	#IMPLIED	D	L	vertical or horizontal alignment
align	LEGEND	%LAlign;	#IMPLIED	D	L	relative to fieldset
align	TABLE	%TAlign;	#IMPLIED	D	L	table position relative to window
align	HR	(left | center | right)	#IMPLIED	D	L
align	DIV, H1, H2, H3, H4, H5, H6, P	(left | center | right | justify)	#IMPLIED	D	L	align, text alignment
align	COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR	(left | center | right | justify | char)	#IMPLIED
alink	BODY	%Color;	#IMPLIED	D	L	color of selected links
alt	APPLET	%Text;	#IMPLIED	D	L	short description
alt	AREA, IMG	%Text;	#REQUIRED			short description
alt	INPUT	CDATA	#IMPLIED			short description
archive	OBJECT	%URI;	#IMPLIED			space separated archive list
archive	APPLET	CDATA	#IMPLIED	D	L	comma separated archive list
axis	TD, TH	CDATA	#IMPLIED			names groups of related headers
background	BODY	%URI;	#IMPLIED	D	L	texture tile for document background
bgcolor	TABLE	%Color;	#IMPLIED	D	L	background color for cells
bgcolor	TR	%Color;	#IMPLIED	D	L	background color for row
bgcolor	TD, TH	%Color;	#IMPLIED	D	L	cell background color
bgcolor	BODY	%Color;	#IMPLIED	D	L	document background color
border	IMG, OBJECT	%Length;	#IMPLIED	D	L	link border width
border	TABLE	%Pixels;	#IMPLIED			controls frame width around table
cellpadding	TABLE	%Length;	#IMPLIED			spacing within cells
cellspacing	TABLE	%Length;	#IMPLIED			spacing between cells
char	COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR	%Character;	#IMPLIED			alignment char, e.g. char=':'
charoff	COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR	%Length;	#IMPLIED			offset for alignment char
charset	A, LINK, SCRIPT	%Charset;	#IMPLIED			char encoding of linked resource
checked	INPUT	(checked)	#IMPLIED			for radio buttons and check boxes
cite	BLOCKQUOTE, Q	%URI;	#IMPLIED			URI for source document or msg
cite	DEL, INS	%URI;	#IMPLIED			info on reason for change
class	All elements but BASE, BASEFONT, HEAD, HTML, META, PARAM, SCRIPT, STYLE, TITLE	CDATA	#IMPLIED			space separated list of classes
classid	OBJECT	%URI;	#IMPLIED			identifies an implementation
clear	BR	(left | all | right | none)	none	D	L	control of text flow
code	APPLET	CDATA	#IMPLIED	D	L	applet class file
codebase	OBJECT	%URI;	#IMPLIED			base URI for classid, data, archive
codebase	APPLET	%URI;	#IMPLIED	D	L	optional base URI for applet
codetype	OBJECT	%ContentType;	#IMPLIED			content type for code
color	BASEFONT, FONT	%Color;	#IMPLIED	D	L	text color
cols	FRAMESET	%MultiLengths;	#IMPLIED		F	list of lengths, default: 100% (1 col)
cols	TEXTAREA	NUMBER	#REQUIRED
colspan	TD, TH	NUMBER	1			number of cols spanned by cell
compact	DIR, MENU	(compact)	#IMPLIED	D	L
compact	DL, OL, UL	(compact)	#IMPLIED	D	L	reduced interitem spacing
content	META	CDATA	#REQUIRED			associated information
coords	AREA	%Coords;	#IMPLIED			comma separated list of lengths
coords	A	%Coords;	#IMPLIED			for use with client-side image maps
data	OBJECT	%URI;	#IMPLIED			reference to object's data
datetime	DEL, INS	%Datetime;	#IMPLIED			date and time of change
declare	OBJECT	(declare)	#IMPLIED			declare but don't instantiate flag
defer	SCRIPT	(defer)	#IMPLIED			UA may defer execution of script
dir	All elements but APPLET, BASE, BASEFONT, BDO, BR, FRAME, FRAMESET, HR, IFRAME, PARAM, SCRIPT	(ltr | rtl)	#IMPLIED			direction for weak/neutral text
dir	BDO	(ltr | rtl)	#REQUIRED			directionality
disabled	BUTTON, INPUT, OPTGROUP, OPTION, SELECT, TEXTAREA	(disabled)	#IMPLIED			unavailable in this context
enctype	FORM	%ContentType;	"application/x-www- form-urlencoded"
face	BASEFONT, FONT	CDATA	#IMPLIED	D	L	comma separated list of font names
for	LABEL	IDREF	#IMPLIED			matches field ID value
frame	TABLE	%TFrame;	#IMPLIED			which parts of frame to render
frameborder	FRAME, IFRAME	(1 | 0)	1		F	request frame borders?
headers	TD, TH	IDREFS	#IMPLIED			list of id's for header cells
height	IFRAME	%Length;	#IMPLIED		L	frame height
height	IMG, OBJECT	%Length;	#IMPLIED			override height
height	APPLET	%Length;	#REQUIRED	D	L	initial height
height	TD, TH	%Pixels;	#IMPLIED	D	L	height for cell
href	A, AREA, LINK	%URI;	#IMPLIED			URI for linked resource
href	BASE	%URI;	#IMPLIED	D	L	URI that acts as base URI
hreflang	A, LINK	%LanguageCode;	#IMPLIED			language code
hspace	APPLET, IMG, OBJECT	%Pixels;	#IMPLIED	D	L	horizontal gutter
http-equiv	META	NAME	#IMPLIED			HTTP response header name
id	All elements but BASE, HEAD, HTML, META, SCRIPT, STYLE, TITLE	ID	#IMPLIED			document-wide unique id
ismap	IMG	(ismap)	#IMPLIED			use server-side image map
label	OPTION	%Text;	#IMPLIED			for use in hierarchical menus
label	OPTGROUP	%Text;	#REQUIRED			for use in hierarchical menus
lang	All elements but APPLET, BASE, BASEFONT, BR, FRAME, FRAMESET, HR, IFRAME, PARAM, SCRIPT	%LanguageCode;	#IMPLIED			language code
language	SCRIPT	CDATA	#IMPLIED			predefined script language name
link	BODY	%Color;	#IMPLIED	D	L	color of links
longdesc	IMG	%URI;	#IMPLIED			link to long description (complements alt)
longdesc	FRAME, IFRAME	%URI;	#IMPLIED		F	link to long description (complements title)
marginheight	FRAME, IFRAME	%Pixels;	#IMPLIED		F	margin height in pixels
marginwidth	FRAME, IFRAME	%Pixels;	#IMPLIED		F	margin widths in pixels
maxlength	INPUT	NUMBER	#IMPLIED			max chars for text fields
media	STYLE	%MediaDesc;	#IMPLIED			designed for use with these media
media	LINK	%MediaDesc;	#IMPLIED			for rendering on these media
method	FORM	(GET | POST)	GET			HTTP method used to submit the form
multiple	SELECT	(multiple)	#IMPLIED			default is single selection
name	BUTTON, TEXTAREA	CDATA	#IMPLIED
name	APPLET	CDATA	#IMPLIED	D	L	allows applets to find each other
name	SELECT	CDATA	#IMPLIED			field name
name	FRAME, IFRAME	CDATA	#IMPLIED		F	name of frame for targetting
name	A	CDATA	#IMPLIED			named link end
name	INPUT, OBJECT	CDATA	#IMPLIED			submit as part of form
name	MAP	CDATA	#REQUIRED			for reference by usemap
name	PARAM	CDATA	#REQUIRED			property name
name	META	NAME	#IMPLIED			metainformation name
nohref	AREA	(nohref)	#IMPLIED			this region has no action
noresize	FRAME	(noresize)	#IMPLIED		F	allow users to resize frames?
noshade	HR	(noshade)	#IMPLIED	D	L
nowrap	TD, TH	(nowrap)	#IMPLIED	D	L	suppress word wrap
object	APPLET	CDATA	#IMPLIED	D	L	serialized applet file
onblur	A, AREA, BUTTON, INPUT, LABEL, SELECT, TEXTAREA	%Script;	#IMPLIED			the element lost the focus
onchange	INPUT, SELECT, TEXTAREA	%Script;	#IMPLIED			the element value was changed
onclick	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer button was clicked
ondblclick	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer button was double clicked
onfocus	A, AREA, BUTTON, INPUT, LABEL, SELECT, TEXTAREA	%Script;	#IMPLIED			the element got the focus
onkeydown	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a key was pressed down
onkeypress	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a key was pressed and released
onkeyup	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a key was released
onload	FRAMESET	%Script;	#IMPLIED		F	all the frames have been loaded
onload	BODY	%Script;	#IMPLIED			the document has been loaded
onmousedown	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer button was pressed down
onmousemove	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer was moved within
onmouseout	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer was moved away
onmouseover	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer was moved onto
onmouseup	All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE	%Script;	#IMPLIED			a pointer button was released
onreset	FORM	%Script;	#IMPLIED			the form was reset
onselect	INPUT, TEXTAREA	%Script;	#IMPLIED			some text was selected
onsubmit	FORM	%Script;	#IMPLIED			the form was submitted
onunload	FRAMESET	%Script;	#IMPLIED		F	all the frames have been removed
onunload	BODY	%Script;	#IMPLIED			the document has been removed
profile	HEAD	%URI;	#IMPLIED			named dictionary of meta info
prompt	ISINDEX	%Text;	#IMPLIED	D	L	prompt message
readonly	TEXTAREA	(readonly)	#IMPLIED
readonly	INPUT	(readonly)	#IMPLIED			for text and passwd
rel	A, LINK	%LinkTypes;	#IMPLIED			forward link types
rev	A, LINK	%LinkTypes;	#IMPLIED			reverse link types
rows	FRAMESET	%MultiLengths;	#IMPLIED		F	list of lengths, default: 100% (1 row)
rows	TEXTAREA	NUMBER	#REQUIRED
rowspan	TD, TH	NUMBER	1			number of rows spanned by cell
rules	TABLE	%TRules;	#IMPLIED			rulings between rows and cols
scheme	META	CDATA	#IMPLIED			select form of content
scope	TD, TH	%Scope;	#IMPLIED			scope covered by header cells
scrolling	FRAME, IFRAME	(yes | no | auto)	auto		F	scrollbar or none
selected	OPTION	(selected)	#IMPLIED
shape	AREA	%Shape;	rect			controls interpretation of coords
shape	A	%Shape;	rect			for use with client-side image maps
size	HR	%Pixels;	#IMPLIED	D	L
size	FONT	CDATA	#IMPLIED	D	L	[+|-]nn e.g. size="+1", size="4"
size	INPUT	CDATA	#IMPLIED			specific to each type of field
size	BASEFONT	CDATA	#REQUIRED	D	L	base font size for FONT elements
size	SELECT	NUMBER	#IMPLIED			rows visible
span	COL	NUMBER	1			COL attributes affect N columns
span	COLGROUP	NUMBER	1			default number of columns in group
src	SCRIPT	%URI;	#IMPLIED			URI for an external script
src	INPUT	%URI;	#IMPLIED			for fields with images
src	FRAME, IFRAME	%URI;	#IMPLIED		F	source of frame content
src	IMG	%URI;	#REQUIRED			URI of image to embed
standby	OBJECT	%Text;	#IMPLIED			message to show while loading
start	OL	NUMBER	#IMPLIED	D	L	starting sequence number
style	All elements but BASE, BASEFONT, HEAD, HTML, META, PARAM, SCRIPT, STYLE, TITLE	%StyleSheet;	#IMPLIED			associated style info
summary	TABLE	%Text;	#IMPLIED			purpose/structure for speech output
tabindex	A, AREA, BUTTON, INPUT, OBJECT, SELECT, TEXTAREA	NUMBER	#IMPLIED			position in tabbing order
target	A, AREA, BASE, FORM, LINK	%FrameTarget;	#IMPLIED	D	L	render in this frame
text	BODY	%Color;	#IMPLIED	D	L	document text color
title	STYLE	%Text;	#IMPLIED			advisory title
title	All elements but BASE, BASEFONT, HEAD, HTML, META, PARAM, SCRIPT, STYLE, TITLE	%Text;	#IMPLIED			advisory title/amplification
type	A, LINK	%ContentType;	#IMPLIED			advisory content type
type	OBJECT	%ContentType;	#IMPLIED			content type for data
type	PARAM	%ContentType;	#IMPLIED			content type for value when valuetype=ref
type	SCRIPT	%ContentType;	#REQUIRED			content type of script language
type	STYLE	%ContentType;	#REQUIRED			content type of style language
type	INPUT	%InputType;	TEXT			what kind of widget is needed
type	LI	%LIStyle;	#IMPLIED	D	L	list item style
type	OL	%OLStyle;	#IMPLIED	D	L	numbering style
type	UL	%ULStyle;	#IMPLIED	D	L	bullet style
type	BUTTON	(button | submit | reset)	submit			for use as form button
usemap	IMG, INPUT, OBJECT	%URI;	#IMPLIED			use client-side image map
valign	COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR	(top | middle | bottom | baseline)	#IMPLIED			vertical alignment in cells
value	OPTION	CDATA	#IMPLIED			defaults to element content
value	PARAM	CDATA	#IMPLIED			property value
value	INPUT	CDATA	#IMPLIED			required for radio and checkboxes
value	BUTTON	CDATA	#IMPLIED			sent to server when submitted
value	LI	NUMBER	#IMPLIED	D	L	reset sequence number
valuetype	PARAM	(DATA | REF | OBJECT)	DATA			How to interpret value
version	HTML	CDATA	%HTML.Version;	D	L	Constant
vlink	BODY	%Color;	#IMPLIED	D	L	color of visited links
vspace	APPLET, IMG, OBJECT	%Pixels;	#IMPLIED	D	L	vertical gutter
width	HR	%Length;	#IMPLIED	D	L
width	IFRAME	%Length;	#IMPLIED		L	frame width
width	IMG, OBJECT	%Length;	#IMPLIED			override width
width	TABLE	%Length;	#IMPLIED			table width
width	APPLET	%Length;	#REQUIRED	D	L	initial width
width	COL	%MultiLength;	#IMPLIED			column width specification
width	COLGROUP	%MultiLength;	#IMPLIED			default width for enclosed COLs
width	TD, TH	%Pixels;	#IMPLIED	D	L	width for cell
width	PRE	NUMBER	#IMPLIED	D	L