2. HTML 4.01 Specification

2.1 The global structure of an HTML document
2.2 Text
2.3 Lists
2.4 Tables
2.5 Links
2.6 Objects, Images, and Applets
2.7 Style Sheets
2.8 Alignment, font styles, and horizontal rules
2.9 Frames
2.10 Forms
2.11 Scripts

2.1 The global structure of an HTML document

Element	Attribute	Support	Remark
html		Yes
	version	Yes
	lang	No
	dir	Yes
	xml:lang	No
head		Yes
	profile	No
	lang	No
	dir	Yes
	xml:lang	No
title		Yes
	lang	No
	dir	Yes
	xml:lang	No
meta		Yes
	http-equiv	Yes
	name	Yes	NF3 can parse and retrieve the value of the name attribute in the content.
	content	Yes	Partial support.The content attribute in the meta element is supported only if refresh, expires, pragma, cache-control, Set-Cookie are set for http-equiv.
	scheme	No
	lang	No
	dir	Yes
	xml:lang	No
xml-stylesheet		Yes
	href	Yes
	type	Yes
	title	No
	media	Yes
	charset	No
bgsound		No
	balance	No
	class	No
	id	No
	lang	No
	loop	No
	src	No
	title	No
	volume	No
body		Yes
	background	Yes	When a value is defined for the background attribute, displays as if the value is specified for the background-image property of CSS.
	text	Yes	When a value is defined for the text attribute, displays as if the value is specified for the color property of CSS.
	link	Yes	When a value is defined for the link attribute, displays as if the value is specified for the :link property, a CSS pseudo-class.
	vlink	Yes	When a value is defined for the vlink attribute, displays as if the value is specified for the :visited property, a CSS pseudo-class.
	alink	Yes	When a value is defined for the alink attribute, displays as if the value is specified for the :active property, a CSS pseudo-class.
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	bgcolor	Yes	When a value is defined for the background attribute, displays as if the value is specified for the background-color property of CSS.
	onload	Yes
	onunload	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	bgproperties	Yes	When a value is defined for the bgproperties attribute, displays as if the value is specified for the background-attachment property of CSS.　By default, NF3 processes on the assumption that "scroll" is specified.
	topmargin	Yes
	leftmargin	Yes
	bottommargin	Yes
	rightmargin	Yes
	scroll	Yes
	nowrap	No
	marginwidth	Yes
	marginheight	Yes
	xml:lang	No
div		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	nowrap	No
	xml:lang	No
span		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h1		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h2		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h3		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h4		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h5		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
h6		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
address		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
comment		No

2.2 Text

Element	Attribute	Support	Remark
bdo		Yes
	lang	No
	dir	Yes
em		No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
strong		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
dfn		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
code		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
samp		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
kbd		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
var		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
cite		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
abbr		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
acronym		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
blockquote		Yes
	cite	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
q		Yes
	cite	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
sub		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
sup		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
p		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	align	Yes	"justify" is not supported for this attribute.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
br		Yes
	id	Yes
	class	Yes
	title	No
	style	Yes
	clear	Yes
pre		Yes
	width	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
nobr		Yes
wbr		Yes
ins		Yes
	cite	Yes
	datetime	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
del		Yes
	cite	Yes
	datetime	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
plaintext		Yes
blink		Yes
marquee		Yes
	behavior	Yes
	bgcolor	Yes
	direction	Yes
	height	Yes
	hspace	Yes
	loop	Yes
	scrollamount	Yes
	scrolldelay	Yes
	truespeed	No
	vspace	Yes
	width	Yes
ruby		No
	class	No
	id	No
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	oncontextmenu	No
	xml:lang	No
rbc		No
rtc		No
rb		No
rt		No
rp		No

2.3 Lists

Element	Attribute	Support
ul		Yes
	type	Yes
	type	Yes
	type	Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
ol		Yes
	type	Yes
	start	Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
li		Yes
	type	Yes
	value	Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
dl		Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
dt		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmousemove	Yes
	onmouseout	Yes
	onmouseover	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
dd		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
dir		Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
menu		Yes
	compact	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No

2.4 Tables

Element	Attribute	Support	Remark
table		Yes
	summary	No
	align	Yes
	width	Yes	If a fractional value without % is specified, NF3 displays as if an integer value of which fractional part was rounded down was specified. NF3 supports specifying a fractional value with % such as "width="1.2%"". Also, only when the first character is the decimal point, such as "width=".2%"" and is specified with %, it displays in the same way as "width="0.2%"" was specified.
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	bgcolor	Yes
	frame	Yes
	rules	Yes
	border	Yes
	cellspacing	Yes
	cellpadding	Yes
	background	Yes
	bordercolor	Yes
	bordercolordark	No
	bordercolorlight	No
	height	Yes
	hspace	No
	vspace	No
	xml:lang	No
caption		Yes
	align	Yes	- If left is specified, the vertical coordinate is the same as top and the horizontal coordinate is left-aligned in the table width. - If right is specified, the vertical coordinate is the same as top and the horizontal coordinate is right-aligned in the table width.
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	valign	Yes
	xml:lang	No
thead		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	align	Yes	Supported values: center, left, right Not supported values: char, justify
	char	No
	charoff	No
	valign	Yes	Supported values: bottom, baseline, middle, top
	bgcolor	Yes
	xml:lang	No
tfoot		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	align	Yes	Supported values: center, left, right Not supported values: char, justify
	char	No
	charoff	No
	valign	Yes	Supported values : bottom, baseline, middle, top
	bgcolor	Yes
	xml:lang	No
tbody		Yes	Scroll display is not supported.
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	No
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	align	Yes	Supported values: center, left, right Not supported values: char, justify
	char	No
	charoff	No
	valign	Yes	Supported values : bottom, baseline, middle, top
	bgcolor	Yes
	xml:lang	No
colgroup		Yes
	span	Yes
	width	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	align	No
	char	No
	charoff	No
	valign	Yes
	bgcolor	Yes
	xml:lang	No
col		Yes
	span	Yes
	width	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	align	No
	char	No
	charoff	No
	valign	Yes
	bgcolor	Yes
	xml:lang	No
tr		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	bgcolor	Yes
	align	Yes	"justify" and "char" are not supported for this attribute.
	char	No
	charoff	No
	valign	Yes
	height	Yes
	width	No
	background	Yes
	bordercolor	Yes
	bordercolordark	No
	bordercolorlight	No
	xml:lang	No
th		Yes
	headers	No
	scope	No
	abbr	No
	axis	No
	rowspan	Yes	If "0" is specified, NF3 displays the same way as if "1" was specified.
	colspan	Yes	If "0" is specified, NF3 displays the same way as if "1" was specified.
	nowrap	Yes
	width	Yes
	height	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	bgcolor	Yes
	align	Yes	"justify" and "char" are not supported for this attribute.
	char	No
	charoff	No
	valign	Yes
	background	Yes
	bordercolor	Yes
	bordercolordark	No
	bordercolorlight	No
	xml:lang	No
td		Yes
	headers	No
	scope	No
	abbr	No
	axis	No
	rowspan	Yes	If "0" is specified, NF3 displays the same way as if "1" was specified.
	colspan	Yes	If "0" is specified, NF3 displays the same way as if "1" was specified.
	nowrap	Yes
	width	Yes
	height	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	bgcolor	Yes
	align	Yes	"justify" and "char" are not supported for this attribute.
	char	No
	charoff	No
	valign	Yes
	background	Yes
	bordercolor	Yes
	bordercolordark	No
	bordercolorlight	No
	xml:lang	No

2.5 Links

Element	Attribute	Support	Remark
a		Yes
	name	Yes
	href	Yes	NF3 supports jumping via fragment identifier only for a elements and img elements.
	hreflang	No
	type	No
	rel	No
	rev	No
	charset	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	shape	Yes	Only rectangle focus frames are supported.
	coords	Yes
	onfocus	Yes
	onblur	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	target	Yes
	tabindex	Yes	NF3 applies attribute values only when the tab index is enabled in preferences.
	accesskey	No	NF3 supports only ASCII code characters. If two or more characters are specified, they are ignored as invalid.
	xml:lang	No
link		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	href	Yes
	hreflang	No
	type	Yes	Only type="text/css" is supported.
	rel	No
	rev	No
	media	Yes
	target	No
	charset	No
	xml:lang	No
base		Yes
	href	Yes
	target	Yes

2.6 Objects, Images, and Applets

Element	Attribute	Support	Remark
img		Yes
	src	Yes
	longdesc	No
	name	Yes
	id	Yes
	class	Yes
	alt	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	ismap	Yes
	usemap	Yes
	align	Yes
	width	Yes	If a fractional value without % is specified, NF3 displays as if an integer value of which fractional part was rounded down was specified. NF3 supports specifying a fractional value with % such as "width="1.2%"". Also, only when the first character is the decimal point, such as "width=".2%"" and is specified with %, it displays in the same way as "width="0.2%"" was specified.
	height	Yes	If a fractional value without % is specified, NF3 displays as if an integer value of which fractional part was rounded down was specified. NF3 supports specifying a fractional value with % such as "height="1.2%"". Also, only when the first character is the decimal point, such as "height=".2%"" and is specified with %, it displays in the same way as "height="0.2%"" was specified.
	border	Yes
	hspace	Yes
	vspace	Yes
	onload	Yes
	xml:lang	No
object		Yes	On systems where the Browser Engine is linked to plug-ins, all attribute names and attribute values described in this document as attributes of the object element can be passed to plug-ins.
	classid	Yes
	codebase	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	codetype	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	data	Yes
	type	Yes
	archive	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	declare	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	standby	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	id	Yes
	class	Yes
	lang	No
	dir	Yes	Attribute value affects behavior depending on the plug-in implementation.
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	tabindex	Yes
	usemap	Yes
	name	No
	align	Yes
	width	Yes	If a fractional value without % is specified, NF3 displays as if an integer value of which fractional part was rounded down was specified. NF3 supports specifying a fractional value with % such as "width="1.2%"". Also, only when the first character is the decimal point, such as "width=".2%"" and is specified with %, it displays in the same way as "width="0.2%"" was specified.
	height	Yes	If a fractional value without % is specified, NF3 displays as if an integer value of which fractional part was rounded down was specified. NF3 supports specifying a fractional value with % such as "height="1.2%"". Also, only when the first character is the decimal point, such as "height=".2%"" and is specified with %, it displays in the same way as "height="0.2%"" was specified.
	border	Yes
	hspace	Yes
	vspace	Yes
	accesskey	No	Whether it affects behavior of the attribute value depends on implementation of plug-in.
	code	No	Attribute value affects behavior depending on the plug-in implementation.
	xml:lang	No
param		Yes
	name	Yes	NF3 supports only param elements specified between the start tag and end tag of an object element.
	value	Yes	NF3 supports only param elements specified between the start tag and end tag of an object element.
	valuetype	No
	type	No
	id	Yes
applet		Yes	On systems where the Browser Engine is linked to the Java™ VM, all attribute names and attribute values described in this document as attributes of the applet element can be passed to Java™ applets.
	codebase	No
	code	No
	name	Yes	Attribute value affects behavior depending on the plug-in implementation.
	archive	No
	object	No
	width	Yes
	height	Yes
	id	Yes
	class	Yes
	title	No
	style	Yes
	alt	No
	align	Yes
	hspace	No
	vspace	No
	mayscript	No
	src	No
map		Yes
	name	Yes
	onclick	Yes
	ondblclick	Yes
	onkeydown	Yes
	onkeypress	Yes
	onkeyup	Yes
	onmouseup	Yes
	onmousewheel	No
	oncontextmenu	No
	class	Yes
	id	Yes
	title	No
	style	Yes
	lang	No
	dir	Yes
	xml:lang	No
area		Yes
	shape	Yes	Only rectangle focus frames are supported.
	coords	Yes
	nohref	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	alt	No
	href	Yes
	target	Yes
	tabindex	Yes
	accesskey	No	NF3 supports only ASCII code characters. If two or more characters are specified, they are ignored as invalid.
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	onfocus	Yes
	onblur	Yes
	oncontextmenu	No
	xml:lang	No

2.7 Style Sheets

Element	Attribute	Support
style		Yes
	type	Yes
	media	Yes
	lang	No
	dir	Yes
	title	No
	xml:lang	No
	xml:space	No

2.8 Alignment, font styles, and horizontal rules

Element	Attribute	Support	Remark
center		Yes
tt		No	Display does not change
	id	No
	class	No
	lang	No
	dir	No
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	oncontextmenu	No
	xml:lang	No
i		No	Display does not change
	id	No
	class	No
	lang	No
	dir	No
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	oncontextmenu	No
	xml:lang	No
b		No	Display does not change
	id	No
	class	No
	lang	No
	dir	No
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	oncontextmenu	No
	xml:lang	No
big		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
small		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
strike		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
s		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
u		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
font		Yes
	size	Yes
	color	Yes
	face	No	Display does not change
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	xml:lang	No
basefont		Yes
	size	Yes	Even when it is specified with a relative value ("+n"), it is handled as an absolute value ("n").
	color	Yes	Available only when a basefont element is specified as a child element of the head element.
	face	No
	id	Yes
	class	Yes
	lang	No
	title	No
	style	Yes
hr		Yes
	align	Yes
	noshade	Yes
	size	Yes
	width	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	color	Yes
	xml:lang	No

2.9 Frames

Element	Attribute	Support
frameset		Yes
	rows	Yes
	cols	Yes
	id	Yes
	class	Yes
	title	No
	style	Yes
	onload	Yes
	onunload	Yes
	border	Yes
	bordercolor	Yes
	frameborder	Yes
	framespacing	No
frame		Yes
	name	Yes
	longdesc	No
	src	Yes
	noresize	Yes
	scrolling	Yes
	frameborder	Yes
	marginwidth	Yes
	marginheight	Yes
	id	Yes
	class	Yes
	title	No
	style	Yes
	onload	Yes
noframes		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	No
	onkeydown	No
	onkeyup	No
	xml:lang	No
iframe		Yes
	longdesc	No
	name	Yes
	width	Yes
	height	Yes
	id	Yes
	class	Yes
	title	No
	style	Yes
	src	Yes
	frameborder	Yes
	marginwidth	Yes
	marginheight	Yes
	scrolling	Yes
	align	Yes

2.10 Forms

Element	Attribute	Support	Remark
form		Yes
	action	Yes	NF3 submits only when "action" is specified.
	method	Yes
	enctype	Yes
	accept-charset	Yes
	accept	Yes
	name	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	style	Yes
	title	No
	target	Yes
	onsubmit	Yes
	onreset	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
input		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	disabled	Yes
	tabindex	Yes
	accesskey	No	NF3 supports only ASCII code characters. If two or more characters are specified, they are ignored as invalid.
	onfocus	Yes
	onblur	Yes
	onselect	No
	onchange	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
	type = text
input	maxlength	Yes
	name	Yes
	size	Yes
	value	Yes
	readonly	Yes
	type = password
input	maxlength	Yes
	name	Yes
	size	Yes
	value	Yes
	readonly	Yes
	type = checkbox
input	checked	Yes
	name	Yes
	value	Yes
	type = radio
input	checked	Yes
	name	Yes
	value	Yes
	type = submit
input	name	Yes
	value	Yes
	type = reset
input	name	Yes
	value	Yes
	type = file
input	accept	No
	name	Yes
	size	Yes
	value	No
	type = hidden
input	name	Yes
	value	Yes
	type = image
input	align	Yes
	alt	Yes
	border	Yes
	height	Yes
	ismap	Yes
	name	Yes
	src	Yes
	usemap	Yes
	value	Yes
	width	Yes
	type = button
input	value	Yes
button		Yes	Label string specified in the button element is displayed top-aligned.
	name	Yes
	value	Yes
	type	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	disabled	Yes
	accesskey	No	NF3 supports only ASCII code characters. If two or more characters are specified, they are ignored as invalid.
	tabindex	Yes
	onfocus	Yes
	onblur	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
select		Yes
	name	Yes
	size	Yes
	multiple	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	disabled	Yes
	tabindex	Yes
	onfocus	Yes
	onblur	Yes
	onchange	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	accesskey	No	Only ASCII code characters are supported. If two or more characters are specified, they are ignored as invalid.
	xml:lang	No
optgroup		Yes
	label	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	No
	disabled	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
option		Yes
	selected	Yes
	value	Yes
	label	No
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes	Valid CSS property: color, background-color
	disabled	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
textarea		Yes
	name	Yes
	rows	Yes
	cols	Yes
	disabled	Yes
	readonly	Yes
	tabindex	Yes
	accesskey	No
	onfocus	Yes
	onblur	Yes
	onselect	No
	onchange	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeydown	Yes
	onkeypress	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
isindex		No
	prompt	No
	id	No
	class	No
	lang	No
	dir	No
	title	No
	style	No
	xml:lang	No
label		Yes
	for	Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	accesskey	No	NF3 supports only ASCII code characters. If two or more characters are specified, they are ignored as invalid.
	onfocus	No
	onblur	No
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
fieldset		Yes
	id	Yes
	class	Yes
	lang	No
	dir	Yes
	title	No
	style	Yes
	onclick	Yes
	ondblclick	Yes
	onmousedown	Yes
	onmouseup	Yes
	onmousewheel	No
	onmouseover	Yes
	onmousemove	Yes
	onmouseout	Yes
	onkeypress	Yes
	onkeydown	Yes
	onkeyup	Yes
	oncontextmenu	No
	xml:lang	No
legend		No
	accesskey	No
	align	No
	id	No
	class	No
	lang	No
	dir	No
	title	No
	style	No
	onclick	No
	ondblclick	No
	onmousedown	No
	onmouseup	No
	onmousewheel	No
	onmouseover	No
	onmousemove	No
	onmouseout	No
	onkeypress	Yes
	onkeydown	No
	onkeyup	No
	oncontextmenu	No
	xml:lang	No

2.11 Scripts

Element	Attribute	Support
script		Yes
	charset	Yes
	type	Yes
	src	Yes
	defer	Yes
noscript		Yes
	class	Yes
	id	Yes
	title	No
	xml:lang	No
	style	Yes