Index of Attributes 

Legend: Deprecated, Loose DTD, Frameset DTD
NameRelated ElementsTypeDefaultDepr.DTDComment
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 DLrelative to table
align APPLET, IFRAME, IMG, INPUT, OBJECT %IAlign; #IMPLIED DLvertical or horizontal alignment
align LEGEND %LAlign; #IMPLIED DLrelative to fieldset
align TABLE %TAlign; #IMPLIED DLtable position relative to window
align HR (left | center | right) #IMPLIED DL 
align DIV, H1, H2, H3, H4, H5, H6, P (left | center | right | justify) #IMPLIED DLalign, text alignment
align COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR (left | center | right | justify | char) #IMPLIED    
alink BODY %Color; #IMPLIED DLcolor of selected links
alt APPLET %Text; #IMPLIED DLshort 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 DLcomma separated archive list
axis TD, TH CDATA #IMPLIED   names groups of related headers
background BODY %URI; #IMPLIED DLtexture tile for document background
bgcolor TABLE %Color; #IMPLIED DLbackground color for cells
bgcolor TR %Color; #IMPLIED DLbackground color for row
bgcolor TD, TH %Color; #IMPLIED DLcell background color
bgcolor BODY %Color; #IMPLIED DLdocument background color
border IMG, OBJECT %Length; #IMPLIED DLlink 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 DLcontrol of text flow
code APPLET CDATA #IMPLIED DLapplet class file
codebase OBJECT %URI; #IMPLIED   base URI for classid, data, archive
codebase APPLET %URI; #IMPLIED DLoptional base URI for applet
codetype OBJECT %ContentType; #IMPLIED   content type for code
color BASEFONT, FONT %Color; #IMPLIED DLtext color
cols FRAMESET %MultiLengths; #IMPLIED  Flist 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 DL 
compact DL, OL, UL (compact) #IMPLIED DLreduced 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 DLcomma 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  Frequest frame borders?
headers TD, TH IDREFS #IMPLIED   list of id's for header cells
height IFRAME %Length; #IMPLIED  Lframe height
height IMG, OBJECT %Length; #IMPLIED   override height
height APPLET %Length; #REQUIRED DLinitial height
height TD, TH %Pixels; #IMPLIED DLheight for cell
href A, AREA, LINK %URI; #IMPLIED   URI for linked resource
href BASE %URI; #IMPLIED   URI that acts as base URI
hreflang A, LINK %LanguageCode; #IMPLIED   language code
hspace APPLET, IMG, OBJECT %Pixels; #IMPLIED DLhorizontal 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 DLpredefined script language name
link BODY %Color; #IMPLIED DLcolor of links
longdesc IMG %URI; #IMPLIED   link to long description (complements alt)
longdesc FRAME, IFRAME %URI; #IMPLIED  Flink to long description (complements title)
marginheight FRAME, IFRAME %Pixels; #IMPLIED  Fmargin height in pixels
marginwidth FRAME, IFRAME %Pixels; #IMPLIED  Fmargin 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 DLallows applets to find each other
name SELECT CDATA #IMPLIED   field name
name FRAME, IFRAME CDATA #IMPLIED  Fname 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  Fallow users to resize frames?
noshade HR (noshade) #IMPLIED DL 
nowrap TD, TH (nowrap) #IMPLIED DLsuppress word wrap
object APPLET CDATA #IMPLIED DLserialized 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  Fall 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  Fall 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 DLprompt 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  Flist 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  Fscrollbar 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 DL 
size FONT CDATA #IMPLIED DL[+|-]nn e.g. size="+1", size="4"
size INPUT CDATA #IMPLIED   specific to each type of field
size BASEFONT CDATA #REQUIRED DLbase 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  Fsource 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 DLstarting 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  Lrender in this frame
text BODY %Color; #IMPLIED DLdocument 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 DLlist item style
type OL %OLStyle; #IMPLIED DLnumbering style
type UL %ULStyle; #IMPLIED DLbullet 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 DLreset sequence number
valuetype PARAM (DATA | REF | OBJECT) DATA   How to interpret value
version HTML CDATA %HTML.Version; DLConstant
vlink BODY %Color; #IMPLIED DLcolor of visited links
vspace APPLET, IMG, OBJECT %Pixels; #IMPLIED DLvertical gutter
width HR %Length; #IMPLIED DL 
width IFRAME %Length; #IMPLIED  Lframe width
width IMG, OBJECT %Length; #IMPLIED   override width
width TABLE %Length; #IMPLIED   table width
width APPLET %Length; #REQUIRED DLinitial width
width COL %MultiLength; #IMPLIED   column width specification
width COLGROUP %MultiLength; #IMPLIED   default width for enclosed COLs
width TD, TH %Pixels; #IMPLIED DLwidth for cell
width PRE NUMBER #IMPLIED DL