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HTML: The Definitive Guide

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B. HTML Tag Quick Reference

In the following table, we list in alphabetical order all the known and some undocumented HTML tags and attributes currently supported by one or more of today's browsers.

As with the other sections of this book, we use the Netscape and Microsoft icons to the far right of each item to show which browser supports that tag or attribute. If no icon is shown, the tag or attribute is part of the HTML 3.2 standard and is supported by both browsers.

We include each tag's possible attributes (some required) indented below their respective tags. In the description, we give possible attribute values as either a range of integer numbers or a definitive list of options, where possible.

<a> ... </a>

Create a hyperlink anchor (href attribute) or fragment identifier (name attribute)

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

href=url

Specify the URL of a hyperlink target (required if not a name anchor)

 

name=name

Specify the name of a fragment identifier (required if not a hypertext reference anchor)

 

onclick=applet

Specify an applet to run when user clicks on the image

(Netscape) (Internet Explorer)

onmouseout=applet

Specify an applet to run when the mouse leaves the image

(Netscape)

onmouseover=applet

Specify an applet to run when the mouse enters the image

(Netscape) (Internet Explorer)

rel=relationship

Indicate the relationship from this document to the target

 

rev=relationship

Indicate the reverse relationship of the target to this document

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

target=name

Define the name of the frame or window to receive the referenced document

(Netscape) (Internet Explorer)

title=string

Provide a title for the target document

 

<address> ... </address>

The enclosed text is an address

 

<applet> ... </applet>

Define an executable applet within a text flow

 

align=position

Align the <applet> region to either the top, middle, bottom (default), left, right, absmiddle, baseline, or absbottom of the text in the line

 

alt=string

Specify alternative text to replace the <applet> region within browsers that support the <applet> tag, but cannot execute the application

 

archive=url

Specify a class archive to be downloaded to the browser and then searched for code class

(Netscape)

code=class

Specify the class name of the code to be executed (required)

 

codebase=url

URL from which the code is retrieved

 

height=n

Specify the height, in pixels, of the <applet> region

 

hspace=n

Specify additional space, in pixels, to allow to the left and right of the <applet> region

 

mayscript

If present, allows the applet to access JavaScript within the page

(Netscape)

name=name

Specify the name of this particular instance of the <applet>

 

title=string

Provide a title for the applet

(Internet Explorer)

vspace=n

Specify additional space, in pixels, to allow above and below the <applet> region

 

width=n

Specify the width, in pixels, of the <applet> region

 

<area>

Define a mouse-sensitive area in a client-side image map

 

alt=string

Provide alternative text to be displayed by nongraphical browsers

 

coords=list

Specify a comma-separated list of shape-dependent coordinates that define the edge of this area

 

href=url

Specify the URL of a hyperlink target associated with this area

 

nohref

Indicate that no document is associated with this area; clicking in the area has no effect

 

notab

Do not include this area in the tabbing order

(Internet Explorer)

onmouseout=applet

Specify an applet to be run when the mouse leaves this area

(Netscape)

onmouseover=applet

Specify an applet to be run when the mouse enters this area

(Netscape)

shape=shape

Define the region's shape to be circ, circle, poly, polygon, rect, or rectangle

 

taborder=n

Specify this area's position in the tabbing order

(Internet Explorer)

target=name

Specify the frame or window to receive the document linked by this area

(Netscape)

title=string

Provide a title for this area

(Internet Explorer)

<b> ... </b>

Format the enclosed text using a bold typeface

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<base>

Specify the base URL for all relative URLs in this document

 

href=url

Specify the base URL (required)

 

target=name

Define the default target of all <a> links in the document

(Netscape) (Internet Explorer)

<basefont>

Specify the font size for subsequent text

 

color=color

Specify the base font's color

(Internet Explorer)

name=name

Specify local font to be used for the base font

(Internet Explorer)

size=value

Set the basefont size of 1 to 7 (required; default is 3)

 

<bgsound>

Define background audio for the document

(Internet Explorer)

loop=value

Set the number of times to play the audio; value may be an integer or the value infinite

(Internet Explorer)

src=url

Provide the URL of the audio file to be played

(Internet Explorer)

<big> ... </big>

Format the enclosed text using a bigger typeface

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<blink> ... </blink>

Cause the enclosed content to blink

(Netscape)

<blockquote> ... </blockquote>

The enclosed text is a block quotation

 

<body> ... </body>

Delimit the beginning and end of the document body

 

alink=color

Set the color of active hypertext links in the document

 

background=url

Specify the URL of an image to be tiled in the document background

 

bgcolor=color

Set the background color of the document

 

bgproperties=value

With value set to fixed, prevent the background image from scrolling with the document content

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

leftmargin=value

Set the size, in pixels, of the document's left margin

(Internet Explorer)

link=color

Set the color of unvisited hypertext links in the document

 

onblur=applet

Specify an applet to be run when the mouse leaves the document window

(Netscape) (Internet Explorer)

onfocus=applet

Specify an applet to be run when the mouse enters the document window

(Netscape) (Internet Explorer)

onload=applet

Specify an applet to be run when the document is loaded

(Netscape) (Internet Explorer)

onunload=applet

Specify an applet to be run when the document is unloaded

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

text=color

Set the color of regular text in the document

 

topmargin=value

Set the size, in pixels, of the document's top margin

(Internet Explorer)

vlink=color

Set the color of visited links in the document

 

<br>

Break the current text flow, resuming at the beginning of the next line

 

clear=margin

Break the flow and move downward until the desired margin, either left, right, none, or all, is clear

 

<caption> ... </caption>

Define a caption for a table

 

align=position

For Netscape, set the vertical position of the caption to either top or bottom. For Internet Explorer, set the horizontal alignment of the caption to either left, center, or right.

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

valign=position

Set the vertical position of the caption to either top or bottom

(Internet Explorer)

<center> ... </center>

Center the enclosed text

 

<cite> ... </cite>

The enclosed text is a citation

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<code> ... </code>

The enclosed text is a code sample

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<col>

Define a column within a <colgroup>

(Internet Explorer)

align=position

Set the column alignment to left, center, or right

(Internet Explorer)

span=n

Define the number of columns affected by this <col> tag

(Internet Explorer)

<colgroup>

Define a column group within a table

(Internet Explorer)

align=position

Set the horizontal alignment of text within the columns to either left, center, or right

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Internet Explorer)

span=n

Define the number of columns in the group

(Internet Explorer)

style=style

Specify an inline style for this tag

(Internet Explorer)

valign=position

Set the vertical alignment of text within the columns to either top, middle, or bottom

(Internet Explorer)

width=n

Set the width, in pixels or as a percentage, of each column in the group

(Internet Explorer)

<comment> ... </comment>

Place a comment in the document. Comments will be visible in all other browsers.

(Internet Explorer)

<dd> ... </dd>

Define the definition portion of an element in a definition list

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<dfn> ... </dfn>

Format the enclosed text as a definition

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<dir> ... </dir>

Create a directory list containing <li> tags

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

compact

Make the list more compact if possible

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

type=bullet

Set the bullet style for this list to either circle, disc (default), or square

(Netscape) (Internet Explorer)

<div> ... </div>

Create a division within a document

 

align=type

Align the text within the division to left, center, or right

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

lang=name

Specify the language used for this division

(Internet Explorer)

nowrap

Suppress word wrapping within this division

(Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<dl> ... </dl>

Create a definition list containing <dt> and <dd> tags

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

compact

Make the list more compact if possible

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<dt> ... </dt>

Define the definition term portion of an element in a definition list

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<em> ... </em>

Format the enclosed text with additional emphasis

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<embed>

Embed an application in a document

(Netscape) (Internet Explorer)

align=position

Align the applet area to either the top or bottom of the adjacent text, or to the left or right margin of the page, with subsequent text flowing around the applet

(Netscape)

border=n

Specify the size, in pixels, of the border around the applet

(Netscape)

height=n

Specify the height, in pixels, of the applet

(Netscape) (Internet Explorer)

hidden

If present, hide the applet on the page

(Netscape) (Internet Explorer)

hspace=n

Define, in pixels, additional space to be placed to the left and right of the applet

(Netscape)

name=name

Provide a name for the applet

(Netscape) (Internet Explorer)

palette=value

In Netscape, a value of foreground causes the applet to use the foreground palette in Windows only; background uses the background palette. In Internet Explorer, provides the foreground and background colors for the applet, specified as two color values separated by a vertical bar (|)

(Netscape) (Internet Explorer)

pluginspage=url

Provides the URL of the page containing instructions for installing the plug-in associated with the applet

(Netscape)

src=url

Supplies the URL of the data to be fed to the applet

(Netscape) (Internet Explorer)

type=type

Specifies the MIME type of the plug-in to be used

(Netscape)

units=type

Set the units for the height and width attributes to either pixels (the default) or en (half the text point size)

(Netscape) (Internet Explorer)

vspace=n

Define, in pixels, additional space to be placed above and below the applet

(Netscape)

width=n

Specify the width, in pixels, of the applet

(Netscape) (Internet Explorer)

<font> ... </font>

Set the size or color of the enclosed text

 

color=color

Set the color of the enclosed text to the desired color

 

face=list

Set the typeface of the enclosed text to the first available font in the comma-separated list of font names

(Netscape) (Internet Explorer)

size=value

Set the size to absolute size 1 to 7, or relative to the <basefont> size using +n or -n (required)

 

<form> ... </form>

Delimit a form

 

action=url

Specify the URL of the application that will process the form (required)

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

enctype=encoding

Specify how the form element values will be encoded

 

method=style

Specify the parameter-passing style, either get or post (required)

 

name=name

Supply a name for this form for use by JavaScript

(Netscape)

onreset=applet

Specify an applet to be run when the form is reset

(Netscape)

onsubmit=applet

Specify an applet to be run when the form is submitted

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

target=name

Specify the name of the frame or window to receive the results of the form after submission

(Netscape) (Internet Explorer)

<frame> ... </frame>

Define a frame within a frameset

(Netscape) (Internet Explorer)

bordercolor=color

Set the color of the frame's border to color

(Netscape)

frameborder=n

If value is yes (Netscape only) or 1 (Netscape and Internet Explorer), enable frame borders. If value is no (Netscape only) or 0 (Netscape and Internet Explorer), disable frame borders.

(Netscape) (Internet Explorer)

marginheight=n

Place n pixels of space above and below the frame contents

(Netscape) (Internet Explorer)

marginwidth=n

Place n pixels of space to the left and right of the frame contents

(Netscape) (Internet Explorer)

name=name

Define the name of the frame

(Netscape) (Internet Explorer)

noresize

Disable user resizing of the frame

(Netscape) (Internet Explorer)

scrolling=type

Always add scrollbars (yes), never add scrollbars (no), or for Netscape only, add scrollbars when needed (auto)

(Netscape) (Internet Explorer)

src=url

Define the URL of the source document for this frame

(Netscape) (Internet Explorer)

<frameset> ... </frameset>

Define a collection of frames or other framesets

(Netscape) (Internet Explorer)

border=n

Set the thickness of the frame borders in this frameset

(Netscape)

bordercolor=color

Define the color of the borders in this frameset

(Netscape)

cols=list

Specify the number and width of frames within a frameset

(Netscape) (Internet Explorer)

frameborder=value

If value is yes (Netscape only) or 1 (Netscape and Internet Explorer), enable frame borders. If value is no (Netscape only) or 0 (Netscape and Internet Explorer), disable frame borders.

(Netscape) (Internet Explorer)

framespacing=n

Define the thickness of the frame borders in this frameset

(Internet Explorer)

onblur=applet

Define an applet to be run when the mouse leaves this frameset

(Netscape)

onfocus=applet

Define an applet to be run when the mouse enters this frameset

(Netscape)

onload=applet

Define an applet to be run when this frameset is loaded

(Netscape)

onunload=applet

Define an applet to be run when this frameset is removed from the display

(Netscape)

rows=list

Specify the number and height of frames within a frameset

(Netscape) (Internet Explorer)

<hn> ... </hn>

The enclosed text is a level n header; for level n from 1 to 6

 

align=type

Specify the heading alignment as either left (default), center, or right

 

class=name

Specify a style class controlling the appearance of the heading

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<head> ... </head>

Delimit the beginning and end of the document head

 

<hr>

Break the current text flow and insert a horizontal rule

 

align=type

Specify the rule alignment as either left, center (default), or right

 

class=name

Specify a style class controlling the appearance of the rule

(Netscape) (Internet Explorer)

color=color

Define the color of the rule

(Internet Explorer)

noshade

Do not use 3D shading to render the rule

 

size=pixels

Set the thickness of the rule to an integer number of pixels

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

width=value or %

Set the width of the rule to either an integer number of pixels or a percentage of the page width

 

<html> ... </html>

Delimit the beginning and end of the entire HyperText Markup Language document

 

version=string

Indicate the HTML version used to create this document

 

<i> ... </i>

Format the enclosed text in an italic typeface

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<iframe> ... </iframe>

Define an inline frame

(Internet Explorer)

align=position

Set the position of the frame aligned to the top, center, or bottom of the surrounding text, or flush against the left or right margins with subsequent text flowing around the frame

(Internet Explorer)

frameborder=value

If value is 1, enable frame borders. If value is 0, disable frame borders.

(Internet Explorer)

height=n

Set the height, in pixels, of the frame

(Internet Explorer)

marginheight=n

Place n pixels of space above and below the frame contents

(Internet Explorer)

marginwidth=n

Place n pixels of space to the left and right of the frame contents

(Internet Explorer)

name=name

Define the name of the frame

(Internet Explorer)

scrolling=type

Always add scrollbars (yes) or never add scrollbars (no)

(Internet Explorer)

src=url

Define the URL of the source document for this frame

(Internet Explorer)

width=n

Set the width, in pixels, of the frame

(Internet Explorer)

<ilayer> ... </ilayer>

Define an inline layer

(Netscape)

above=name

Place this layer above the named layer

(Netscape)

background=url

Specify a background image for the layer

(Netscape)

below=name

Place this layer below the named layer

(Netscape)

bgcolor=color

Specify the background color for the layer

(Netscape)

class=name

Specify a style class controlling the appearance of this tag

(Netscape)

clip=edge

Define the layer's clipping region, in pixels. If left and top are 0, they may be omitted

(Netscape)

left=n

Define, in pixels, the position of the layer's left edge from the containing line of text

(Netscape)

name=name

Provide a name for the layer

(Netscape)

src=url

Supply the content of the layer from another document

(Netscape)

style=style

Specify an inline style for this tag

(Netscape)

top=n

Define, in pixels, the position of the layer's top edge from the containing line of text

(Netscape)

visibility=value

Determine whether to show the layer, hide the layer, or inherit the visibility attribute from a containing layer

(Netscape)

width=n

Define the width, in pixels, of the layer

(Netscape)

z-index=n

Specify the layer's position in the stacking order

(Netscape)

<img>

Insert an image into the current text flow

 

align=type

Align the image to either the top, middle, bottom (default), left, or right of the text in the line. For Netscape Navigator, additionally to the absmiddle, baseline, or absbottom of the text.

 

alt=text

Provide alternative text for non-image-capable browsers

 

border=n

Set the pixel thickness of the border around images contained within hyperlinks

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

controls

Add playback controls for embedded video clips

(Internet Explorer)

dynsrc=url

Specify the URL of a video clip to be displayed

(Internet Explorer)

height=n

Specify the height of the image in scan lines

 

hspace=n

Specify the space, in pixels, to be added to the left and right of the image

 

ismap

Indicate that the image is mouse-selectable when used within an <a> tag

 

loop=value

Set the number of times to play the video; value may be an integer or the value infinite

(Internet Explorer)

lowsrc=url

Specify a low-resolution image to be loaded by the browser first, followed by the image specified by the src attribute

(Netscape)

name=name

Provide a name for the image for use by JavaScript

(Netscape)

onabort=applet

Provide an applet to be run if the loading of the image is aborted

(Netscape)

onerror=applet

Provide an applet to be run if the loading of the image is unsuccessful

(Netscape)

onload=applet

Provide an applet to be run if the loading of the image is successful

(Netscape)

src=url

Specify the source URL of the image to be displayed (required)

 

start=start

Specify when to play the video clip, either fileopen or mouseover

(Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

usemap=url

Specify the map of coordinates and links that define the hypertext links within this image

 

vspace=n

Specify the vertical space, in pixels, added at the top and bottom of the image

 

width=n

Specify the width of the image in pixels

 

<input type=button>

Create a checkbox input element within a <form>

(Netscape) (Internet Explorer)

name=name

Specify the name of the parameter to be passed to the form-processing application if the input element is selected (required)

(Netscape) (Internet Explorer)

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify the value of the parameter sent to the form-processing application if this form element is selected (required)

(Netscape) (Internet Explorer)

<input type=checkbox>

Create a checkbox input element within a <form>

 

checked

Mark the element as initially selected

 

name=string

Specify the name of the parameter to be passed to the form-processing application if the input element is selected (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify the value of the parameter sent to the form-processing application if this form element is selected (required)

 

<input type=file>

Create a file-selection element within a <form>

 

maxlength=n

Specify the maximum number of characters to accept for this element

 

name=name

Specify the name of the parameter that is passed to the form-processing application for this input element (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

size=n

Specify the number of characters to display for this element

 

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

<input type=hidden>

Create a hidden element within a <form>

 

name=name

Specify the name of the parameter that is passed to the form-processing application for this input element (required)

 

value=string

Specify the value of this element that is passed to the form-processing application

 

<input type=image>

Create an image input element within a <form>

 

align=type

Align the image to either the top, middle, or bottom of the form element's text

 

border=n

Set the pixel thickness of the border of the image

 

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

name=name

Specify the name of the parameter to be passed to the form-processing application for this input element (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

src=url

Specify the source URL of the image (required)

 

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

<input type=password>

Create a content-protected text-input element within a <form>

 

maxlength=n

Specify the maximum number of characters to accept for this element

 

name=name

Specify the name of the parameter to be passed to the form-processing application for this input element (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onblur=applet

Specify an applet to be run when the mouse leaves this element

(Netscape) (Internet Explorer)

onchange=applet

Specify an applet to be run when the user changes the value of this element

(Netscape) (Internet Explorer)

onfocus=applet

Specify an applet to be run when the mouse enters this element

(Netscape) (Internet Explorer)

onselect=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

size=n

Specify the number of characters to display for this element

 

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify the initial value for this element

 

<input type=radio>

Create a radio-button input element within a <form>

 

checked

Mark the element as initially selected

 

name=name

Specify the name of the parameter that is passed to the form-processing application if this input element is selected (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify the value of the parameter that is passed to the form-processing application if this element is selected (required)

 

<input type=reset>

Create a reset button within a <form>

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify an alternate label for the reset button (default is "Reset")

 

<input type=submit>

Create a submit button within a <form>

 

name=name

Specify the name of the parameter that is passed to the form-processing application for this input element (required)

 

notab

Specifies that this element is not part of the tabbing order

(Internet Explorer)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

taborder=n

Specifies this element's position in the tabbing order

(Internet Explorer)

value=string

Specify an alternate label for the submit button, as well as the value passed to the form-processing application for this parameter if this button is clicked

 

<input type=text>

Create a text input element within a <form>

 

maxlength=n

Specify the maximum number of characters to accept for this element

 

name=name

Specify the name of the parameter that is passed to the form-processing application for this input element (required)

 

notab

Specify that this element is not part of the tabbing order

(Internet Explorer)

onblur=applet

Specify an applet to be run when the mouse leaves this element

(Netscape) (Internet Explorer)

onchange=applet

Specify an applet to be run when the user changes the value of this element

(Netscape) (Internet Explorer)

onfocus=applet

Specify an applet to be run when the mouse enters this element

(Netscape) (Internet Explorer)

onselect=applet

Specify an applet to be run if the user clicks this element

(Netscape) (Internet Explorer)

size=n

Specify the number of characters to display for this element

 

taborder=n

Specify this element's position in the tabbing order

(Internet Explorer)

value=string

Specify the initial value for this element

 

<isindex>

Create a "searchable" HTML document

 

action=url

PFor Internet Explorer only, provide the URL of the program that will perform the searching action

(Internet Explorer)

prompt=string

Provide an alternate prompt for the input field

 

<kbd> ... </kbd>

The enclosed text is keyboard-like input

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<keygen>

Generate key information in a form

(Netscape)

challenge=string

Provide a challenge string to be packaged with the key

(Netscape)

name=name

Provide a name for the key

(Netscape)

<layer> ... </layer>

Define a layer

(Netscape)

above=name

Place this layer above the named layer

(Netscape)

background=url

Specify a background image for the layer

(Netscape)

below=name

Place this layer below the named layer

(Netscape)

bgcolor=color

Specify the background color for the layer

(Netscape)

class=name

Specify a style class controlling the appearance of this tag

(Netscape)

clip=edge

Define the layer's clipping region, in pixels. If left and top are 0, they may be omitted

(Netscape)

left=n

Define, in pixels, the position of the layer's left edge from the containing document or layer

(Netscape)

name=name

Provide a name for the layer

(Netscape)

src=url

Supply the content of the layer from another document

(Netscape)

style=style

Specify an inline style for this tag

(Netscape)

top=n

Define, in pixels, the position of the layer's top edge from the containing document or layer

(Netscape)

visibility=value

Determine whether to show the layer, hide the layer, or inherit the visibility attribute from a containing layer

(Netscape)

width=n

Define the width, in pixels, of the layer

(Netscape)

z-index=n

Specify the layer's position in the stacking order

(Netscape)

<li> ... </li>

Delimit a list item in an ordered (<ol>) or unordered (<ul>) list

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

type=format

Set the type of this list element to the desired format. For <li> within <ol>: A (capital letters), a (lowercase letters), I (capital Roman numerals), i (lowercase Roman numerals), or 1 (Arabic numerals; default). For <li> within <ul>: circle, disc (default), or square.

 

value=n

Set the number for this list item to n

 

<link>

Define a link between this document and another document in the document <head>

 

href=url

Specify the hypertext reference URL of the target document

 

rel=relation

Indicate the relationship from this document to the target

 

rev=relation

Indicate the reverse relationship from the target to this document

 

title=string

Provide a title for the target document

 

type=string

Specify the MIME type for the linked document. Usually used in conjunctionwith links to stylesheets, when the type is set to text/css

(Netscape) (Internet Explorer)

<listing> ... </listing>

Same as <pre width=132> ... </pre>; deprecated, do not use

 

<map> ... </map>

Define a map containing hotspots in a client-side image map

 

name=name

Define the name of this map (required)

 

<marquee> ... </marquee>

Create a scrolling-text marquee (Internet Explorer only)

(Internet Explorer)

align=position

Align the marquee to the top, middle, or bottom of the surrounding text

(Internet Explorer)

behavior=style

Define marquee style to be scroll, slide, or alternate

(Internet Explorer)

bgcolor=color

Set the background color of the marquee

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Internet Explorer)

direction=dir

Define the direction, left or right, the text is to scroll

(Internet Explorer)

height=n

Define the height, in pixels, of the marquee area

(Internet Explorer)

hspace=n

Define the space, in pixels, to be inserted left and right of the marquee

(Internet Explorer)

loop=value

Set the number of times to animate the marquee; value is an integer or infinite

(Internet Explorer)

scrollamount=value

Set the number of pixels to move the text for each scroll movement

(Internet Explorer)

scrolldelay=value

Specify the delay, in milliseconds, between successive movements of the marquee text

(Internet Explorer)

style=style

Specify an inline style for this tag

(Internet Explorer)

vspace=n

Define the space, in pixels, to be inserted above and below of the marquee

(Internet Explorer)

width=n

Define the width, in pixels, of the marquee area

(Internet Explorer)

<menu> ... </menu>

Define a menu list containing <li> tags

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

compact

Make the list more compact if possible

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

type=bullet

Set the bullet style for this list to either circle, disc (default), or square

(Netscape) (Internet Explorer)

<meta>

Provides additional information about a document

 

charset=name

Specify the character set to be used with this document

(Internet Explorer)

content=string

Specify the value for the meta-information (required)

 

http-equiv=string

Specify the HTTP equivalent name for the meta-information and cause the server to include the name and content in the HTTP header for this document when it is transmitted to the client

 

name=string

Specify the name of the meta-information

 

<multicol> ... </multicol>

Define a multi-column text flow

(Netscape)

class=name

Specify a style class controlling the appearance of this tag

(Netscape)

cols=n

Specify the number of columns

(Netscape)

gutter=n

Define the spacing, in pixels, between columns

(Netscape)

style=style

Specify an inline style for this tag

(Netscape)

width=n

Define the width of the entire column group

(Netscape)

<nobr> ... </nobr>

No breaks allowed in the enclosed text

(Netscape) (Internet Explorer)

<noembed> ... </noembed>

Define content to be presented by browsers that do not support the <embed> tag

(Netscape)

<noframes> ... </noframes>

Define content to be presented by browsers that do not support frames

(Netscape) (Internet Explorer)

<noscript> ... </noscript>

Define content to be presented by browsers that do not support the <script> tag

(Netscape)

<object>

Insert an object into a document

(Internet Explorer)

align=position

Align the object with the surrounding text (texttop, middle, textmiddle, baseline, textbottom, and center) or against the margin with subsequent text flowing around the applet (left and right)

(Netscape) (Internet Explorer)

border=n

Define, in pixels, the object's border width

(Internet Explorer)

classid=url

Supply the URL of the object

(Netscape) (Internet Explorer)

codebase=url

Supply the URL of the object's code base

(Netscape) (Internet Explorer)

codetype=type

Specify the MIME type of the code base

(Internet Explorer)

data=url

Supply data for the object

(Netscape) (Internet Explorer)

declare

Declare this object without instantiating it

(Internet Explorer)

height=n

Define, in pixels, the height of the object

(Netscape) (Internet Explorer)

hspace=n

Provide extra space, in pixels, to the right and left of the object

(Internet Explorer)

id=name

Define the name of this object

(Netscape)

name=name

Define the name of this object

(Internet Explorer)

notab

Do not make this object part of the tabbing order

(Internet Explorer)

shapes

Specify that this object has shaped hyperlinks

(Internet Explorer)

standby=string

Define a message to display while the object loads

(Internet Explorer)

tabindex=n

Specify this object's position in the document tab order

(Internet Explorer)

title=string

Provide a title for this object

(Internet Explorer)

type=type

Specify the MIME type for the object data

(Netscape) (Internet Explorer)

usemap=url

Defines an image map for use with this object

(Internet Explorer)

vspace=n

Provide extra space, in pixels, above and below of the object

(Internet Explorer)

width=n

Define, in pixels, the width of the object

(Netscape) (Internet Explorer)

<ol> ... </ol>

Define an ordered list containing numbered (ascending) <li> elements

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

compact

Present the list in a more compact manner

 

start=n

Start numbering the list at n, instead of 1

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

type=format

Set the numbering format for this list to either A (capital letters), a (lowercase letters), I (capital Roman numerals), i (lowercase Roman numerals), or 1 (Ararbic numerals; default)

 

<option> ... </option>

Define an option within a <select> item in a <form>

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

selected

Make this item initially selected

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

value=string

Return the specified value to the form-processing application instead of the <option> contents

 

<p> ... </p>

Start and end a paragraph

 

align=type

Align the text within the paragraph to left, center, or right

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<param> ... </param>

Supply a parameter to a containing <applet>

 

name=name

Define the name of the parameter

 

type=type

Specify the MIME type of the parameter

(Internet Explorer)

value=string

Define the value of the parameter

 

valuetype=type

Define the type of the value attribute, either as data, ref (the value is a URL pointing to the data), or object (the value is the name of an object in this document)

(Internet Explorer)

<plaintext>

Render the remainder of the document as preformatted plain text

 

<pre> ... </pre>

Render the enclosed text in its original, preformatted style, honoring line breaks and spacing verbatim

 

width=n

Size the text, if possible, so that n characters fit across the display window

 

<s> ... </s>

Same as <strike>. The enclosed text is struck through with a horizontal line

(Netscape) (Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<samp> ... </samp>

The enclosed text is a sample

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<script> ... </script>

Define a script within a document

(Netscape) (Internet Explorer)

language=name

Specify the script language as either vbscript or javascript

(Netscape) (Internet Explorer)

src=url

Provide the URL of the document containing the scripts

(Netscape) (Internet Explorer)

<select> ... </select>

Define a multiple-choice menu or scrolling list within a <form>, containing one or more <option> tags

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

multiple

Allow user to select more than one <option> within the <select>

 

name=name

Define the name for the selected <option> values that, if selected, are passed to the form-processing application (required)

 

onblur=applet

Specify an applet to be run when the mouse leaves this element

(Netscape)

onchange=applet

Specify an applet to be run when the user changes the value of this element

(Netscape)

onclick=applet

Specify an applet to be run if the user clicks this element

(Netscape)

onfocus=applet

Specify an applet to be run when the mouse enters this element

(Netscape)

size=n

Display n items using a pulldown menu for size=1 (without multiple specified) and a scrolling list of n items otherwise

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<server> ... </server>

Define a LiveWire script

(Netscape)

<small> ... </small>

Format the enclosed text using a smaller typeface

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<spacer>

Create blank space in a document

(Netscape)

align=position

Align a block spacer with either the surrounding text (top, texttop, middle, absmiddle, baseline, bottom, absbottom) or against a margin with subsequent text flowing around the spacer (left and right)

(Netscape)

height=n

Define the height, in pixels, of a block spacer

(Netscape)

size=n

Define the length, in pixels, of a horizontal or vertical spacer

(Netscape)

type=type

Set spacer type to one of block, horizontal, or vertical

(Netscape)

width=value

Define the width, in pixels, of a block spacer

(Netscape)

<span> ... </span>

Define a span of text for style application

(Netscape) (Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<strike> ... </strike>

The enclosed text is struck through with a horizontal line

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<strong> ... </strong>

Strongly emphasize the enclosed text

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<style> ... </style>

Define one or more document level styles

(Netscape) (Internet Explorer)

type=type

Define the format of the styles (always text/css)

(Netscape) (Internet Explorer)

<sub> ... </sub>

Format the enclosed text as subscript

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<sup> ... </sup>

Format the enclosed text as superscript

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<table> ... </table>

Define a table

 

align=position

Align the table either left or right and flow the subsequent text around the table

 

background=url

Define a background image for the table

(Internet Explorer)

bgcolor=color

Define the background color for the entire table

(Netscape) (Internet Explorer)

border=n

Create a border n pixels wide

 

bordercolor=color

Define the border color for the entire table

(Internet Explorer)

bordercolordark=color

Define the dark border-highlighting color for the entire table

(Internet Explorer)

bordercolorlight=color

Define the light border-highlighting color for the entire table

(Internet Explorer)

cellpadding=n

Place n pixels of padding around each cell's contents

 

cellspacing=n

Place n pixels of spacing between cells

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

cols=n

Specify the number of columns in this table

(Netscape) (Internet Explorer)

frame=type

Define where table borders are displayed, either border (default), void, above, below, hsides, lhs, rhs, vsides, or box

(Internet Explorer)

height=n

Define the height of the table in pixels

(Netscape)

hspace=n

Specify the horizontal space, in pixels, added at the left and right of the table

(Netscape)

nowrap

Supress text wrapping in table cells

(Internet Explorer)

rules=edges

Determine where inner dividers are drawn, either none (default), groups (only around row and column groups), rows, cols, or all.

(Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

valign=position

Align text in the table to either the top, center, bottom, or baseline

(Internet Explorer)

vspace=n

Specify the vertical space, in pixels, added at the top and bottom of the table

(Netscape)

width=n

Set the width of the table to n pixels or a percentage of the window width

 

<tbody>...</tbody>

Create a row group within a table

(Internet Explorer)

<td> ... </td>

Define a table data cell

 

align=position

Align the cell contents to the left, center, or right

 

background=url

Define a background image for this cell

(Internet Explorer)

bgcolor=color

Define the background color for the cell

(Netscape) (Internet Explorer)

bordercolor=color

Define the border color for the cell

(Internet Explorer)

bordercolordark=color

Define the dark border highlighting color for the cell

(Internet Explorer)

bordercolorlight=color

Define the light border highlighting color for the cell

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

colspan=n

Have this cell straddle n adjacent columns

 

height=n

Define the height, in pixels, for this cell

 

nowrap

Do not automatically wrap and fill text in this cell

 

rowspan=n

Have this cell straddle n adjacent rows

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

valign=position

Vertically align this cell's contents to the top, center, bottom, or baseline of the cell

 

width=n

Set the width of this cell to n pixels or a percentage of the table width

 

<textarea> ... </textarea>

Define a multiline text input area within a <form>; content of the <textarea> tag is the initial, default value

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

cols=n

Display n columns (characters) of text within the text area

 

name=string

Define the name for the text-area value that is passed to the form-processing application (required)

 

onblur=applet

Specify an applet to be run when the mouse leaves this element

(Netscape)

onchange=applet

Specify an applet to be run when the user changes the value of this element

(Netscape)

onfocus=applet

Specify an applet to be run when the mouse enters this element

(Netscape)

onselect=applet

Specify an applet to be run if the user clicks this element

(Netscape)

rows=n

Display n rows of text within the text area

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

wrap=style

Set word wrapping within the text area to off, virtual (display wrap, but do not transmit to server), or physical (display and transmit wrap)

(Netscape)

<tfoot> ... </tfoot>

Define a table footer

(Internet Explorer)

<th> ... </th>

Define a table header cell

 

align=position

Align the cell contents to the left, center, or right

 

background=url

Define a background image for this cell

(Internet Explorer)

bgcolor=color

Define the background color for the cell

(Netscape) (Internet Explorer)

bordercolor=color

Define the border color for the cell

(Internet Explorer)

bordercolordark=color

Define the dark border highlighting color for the cell

(Internet Explorer)

bordercolorlight=color

Define the light border highlighting color for the cell

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

colspan=n

Have this cell straddle n adjacent columns

 

height=n

Define the height, in pixels, of this cell

 

nowrap

Do not automatically wrap and fill text in this cell

 

rowspan=n

Have this cell straddle n adjacent rows

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

valign=position

Vertically align this cell's contents to the top, center, bottom, or baseline of the cell

 

width=n

Set the width of this cell to n pixels or a percentage of the table width

 

<thead> ... </thead>

Define a table heading

(Internet Explorer)

align=position

Define the horizontal text alignment in the heading, either left, center, right, or justify

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Internet Explorer)

style=style

Specify an inline style for this tag

(Internet Explorer)

valign=position

Define the vertical text alignment in the heading, either left, center, right, or justify

(Internet Explorer)

<title> ... </title>

Define the HTML document's title

 

<tr> ... </tr>

Define a row of cells within a table

 

align=type

Align the cell contents in this row to the left, center, or right

 

bgcolor=color

Define the background color for this row

(Netscape) (Internet Explorer)

bordercolor=color

For Internet Explorer, define the border color for this row

(Internet Explorer)

bordercolordark=color

For Internet Explorer, define the dark border-highlighting color for this row

(Internet Explorer)

bordercolorlight=color

For Internet Explorer, define the light border-highlighting color for this row

(Internet Explorer)

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

nowrap

Disable word wrap for all cells in this row

(Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

valign=position

Vertically align the cell contents in this row to the top, center, bottom, or baseline of the cell

 

<tt> ... </tt>

Format the enclosed text in teletype-style (monospaced) font

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<u> ... </u>

The enclosed text is underlined

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<ul> ... </ul>

Define an unordered list of bulleted <li> elements

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

compact

Display the list in a more compact manner

 

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

type=bullet

Set the bullet style for this list to either circle, disc (default), or square

 

<var> ... </var>

The enclosed text is a variable's name

 

class=name

Specify a style class controlling the appearance of this tag

(Netscape) (Internet Explorer)

style=style

Specify an inline style for this tag

(Netscape) (Internet Explorer)

<wbr>

Indicate a potential word break point within a <nobr> section

(Netscape) (Internet Explorer)

<xmp> ... </xmp>

Same as <pre width=80> ... </pre>; deprecated, do not use

 


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