Appendix G

Cross-Browser Comparison of HTML

Table G.1 lists all the HTML 3.2 elements and attributes and indicates which browsers support them.

Table G.1. Comparison of HTML across three popular browsers.

ElementAttribute
Internet Explorer
Netscape Navigator
NCSA Mosaic
<!-- ...>  
*
*
*
<!DOCTYPE ...>  
*
*
*
<A ...>  
*
*
*
 ...HREF
*
*
*
 Mailto : ...TITLE
 
 
*
 ...NAME
*
*
*
 ...TITLE
*
*
*
 ...REL
*
*
*
 ...REV
*
*
*
 ...URN
*
*
*
 ...METHODS
*
*
*
 ...TARGET
 
*
 
<ADDRESS>  
*
*
*
<APPLET ...>  
 
*
 
 ...CODEBASE
 
*
 
 ...CODE
 
*
 
 ...ALT
 
*
 
 ...NAME
 
*
 
 ...WIDTH/HEIGHT
 
*
 
 ...ALIGN
 
*
 
 ...VSPACE/HSPACE
 
*
 
 ...PARAM NAME/VALUE
 
*
 
<B>  
*
*
*
<BASE ...>  
*
*
*
 ...HREF
*
*
*
 ...TARGET
 
*
 
<BASEFONT ...>  
*
*
 
 ...SIZE
*
*
 
 (only visible
 
 
 
  
when FONT SIZE=used too)
 
 
 ...FACE
*
 
 
<BGSOUND ...>  
*
 
*
  
 
 
(will spawn player for .mid files)
 ...LOOP
*
 
*
 ...DELAY
 
 
*
<BIG>  
*
*
 
<BLINK>  
 
*
 
<BLOCKQUOTE>  
*
*
*
<BODY ...>  
*
*
*
 ...BACKGROUND
*
*
*
 ...TEXT
*
*
*
  
 
 
(using color names is reliable)
 ...LINK
*
*
*
 ...VLINK
*
*
*
 ...ALINK
*
 ...BGCOLOR
*
*
*
 ...BGPROPERTIES
*
 
 
 ...LEFTMARGIN
*
 
 
 ...TOPMARGIN
*
 
 
<BR>  
*
*
*
 ...CLEAR
*
*
 
<CAPTION>  
*
*
*
 ...ALIGN
*
*
*
  
(top, bottom, left, right, center)
(top, bottom)
(top, bottom)
 ...VALIGN
*
 
 
  
(top, bottom)
 
 
<CENTER>  
*
*
*
<CITE>  
*
*
*
<CODE>  
*
*
*
<COL>  
*
 
 
 ...SPAN
*
 
 
 ...ALIGN
*
 
 
<COLGROUP>  
*
 
 
 ...SPAN
*
 
 
 ...ALIGN
*
 
 
 ...VALIGN
*
 
 
<COMMENT>  
*
 
*
<DFN>  
*
 
 
<DIR>  
*
*
*
  
(no bullet)
 
<DIV>  
 
*
 
 ...ALIGN
 
*
 
  
 
(left, right, center)
 
<DL>  
*
*
*
<DT>  
*
*
*
<DD>  
*
*
*
 ...COMPACT
*
 
<DT>  
*
*
*
<EM>  
*
*
*
<EMBED ...>  
 
*
 
<FONT ...>  
*
*
 
 ...SIZE
*
*
 
 ...COLOR
*
*
 
 ...FACE
*
 
 
<FORM>  
*
*
*
<FRAME ...>  
 
*
 
 ...SRC
 
*
 
 ...NAME
 
*
 
 ...MARGINWIDTH
 
*
 
 ...MARGINHEIGHT
 
*
 
 ...SCROLLING
 
*
 
 ...NORESIZE
 
*
 
 ...FRAMEBORDER
*
 
 
 ...FRAMESPACING
*
 
 
<FRAMESET ...>  
*
*
 
 ...ROWS
*
*
 
 ...COLS
*
*
 
<H ALIGN= ...>  
*
*
*
  
(center only)
(right, left, center)
(right, left, center)
<H1>  
*
*
*
<H2>  
*
*
*
<H3>  
*
*
*
<H4>  
*
*
*
<H5>  
*
*
*
<H6>  
*
*
*
<HEAD>  
*
*
*
<HR ...>  
*
*
*
 ...SIZE
*
*
*
 ...WIDTH
*
*
*
 ...ALIGN
*
*
*
 ...NOSHADE
*
*
*
 ...COLOR
*
 
 
<HTML>  
*
*
*
<I>  
*
*
*
<IMG ...>  
*
*
*
 ...ALIGN
*
*
*
  
 
 
(top, middle, bottom only)
 ...ALT
*
*
*
 ...ISMAP
*
*
*
 ...SRC
*
*
*
 ...WIDTH
*
*
*
 ...HEIGHT
*
*
*
  
 
 
(image can't be distorted)
 ...BORDER
*
*
 
  
(only when image is a link)
 
 
 ...VSPACE
*
*
 
 ...HSPACE
*
*
 
 ...LOWSRC
 
*
 
 ...USEMAP
*
*
*
 ...VRML
*
 
 
<INPUT ...>  
*
*
*
 ...ALIGN
*
*
*
 ...CHECKED
*
*
*
 ...MAXLENGTH
*
*
*
 ...NAME
*
*
*
 ...SIZE
*
*
*
 ...SRC
*
*
*
 ...TYPE
*
*
*
 ...VALUE
*
*
*
<ISINDEX ...>  
*
*
*
 ...PROMPT
*
*
 
<KBD>  
*
*
*
<LI>  
*
*
*
<LINK ...>
*
*
*
<LISTING>
*
*
*
  
(will translate special characters)
(renders 132 characters to the line and translates special characters)
 
<MAP ...>  
*
*
*
 ...SHAPE
*
*
*
 ...COORDS
*
*
*
 ...AREA
*
*
*
<MARQUEE ...>  
*
 
 
 ...ALIGN
*
 
 
 ...BEHAVIOR
*
 
 
 ...BGCOLOR
*
 
 
 ...DIRECTION
*
 
 
 ...HEIGHT
*
 
 
 ...WIDTH
*
 
 
 ...HSPACE
*
 
 
 ...LOOP
*
 
 
 ...SCROLLAMOUNT
*
 
 
 ...SCROLLDELAY
*
 
 
 ...VSPACE
*
 
 
<MENU>  
*
*
*
  
(no bullet)
 
 
<META ...>  
*
*
*
 ...HTTP-EQUIV
*
*
*
 ...NAME
*
*
*
 ...CONTENT
*
*
*
<NEXTID ...>  
*
*
*
<NOBR>  
*
*
 
<NOFRAMES>  
*
*
 
<OBJECT>  
*
 
  
<PARAM>  
*
 
 
<OL ...>  
*
*
*
 ...TYPE
*
*
 
 ...START
*
*
 
 ...VALUE
*
*
 
<OPTION>  
*
*
*
<P>  
*
*
*
 ...ALIGN
*
*
*
  
(center only)
(left, right, center)
(left, right, center)
<PLAINTEXT>  
*
*
*
  
(allows closing element)
 
(allows closing element)
<PRE>  
*
*
*
<S>  
*
 
*
<SAMP>  
*
*
*
<SCRIPT ...>  
*
*
 
 ...LANGUAGE
*
*
 
 ...SRC
*
*
 
<SELECT>  
*
*
*
<SMALL>  
*
*
 
<SOUND ...>  
 
 
*
  
 
 
(.wav only)
 ...SRC
 
 
*
 ...DELAY
 
 
*
<STRIKE>  
*
*
*
<STRONG>  
*
*
*
<SUB>  
*
*
*
<SUP>  
*
*
*
<TABLE ...>  
*
*
*
 ...BORDER
*
*
*
 ...CELLSPACING
*
*
*
 ...CELLPADDING
*
*
*
 ...WIDTH
*
*
*
 ...HEIGHT
*
*
*
 ...ALIGN
*
*
 
 ...VALIGN/FONT>
*
 
 
 ...BGCOLOR
*
 
 
 ...BORDERCOLOR
*
 
 
 ...BORDERCOLORLIGHT
*
 
 
 ...BORDERCOLORDARK
*
 
 
 ...BACKGROUND
*
 
 
 ...FRAME
*
 
 
 ...RULES
*
 
 
<TBODY>  
*
 
 
<TD ...>  
*
*
*
 ...ROWSPAN
*
*
*
 ...COLSPAN
*
*
*
 ...ALIGN
*
*
 
 ...VALIGN
*
*
*
 ...WIDTH
*
*
 
 ...HEIGHT
*
 
 
 ...NOWRAP
*
*
 
 ...BGCOLOR
*
 
 
 ...BORDERCOLOR
*
 
 
 ...BORDERCOLORLIGHT
*
 
 
 ...BORDERCOLORDARK
*
 
 
 ...BACKGROUND
*
 
 
<TEXTAREA ...>  
*
*
*
 ...NAME
*
*
*
 ...ROWS
*
*
*
 ...COLS
*
*
*
 ...WRAP
 
*
 
<TFOOT>  
*
 
 
<TH ...>  
*
*
*
 ...ROWSPAN
*
*
*
 ...COLSPAN
*
*
*
 ...ALIGN
*
*
*
 ...VALIGN
*
*
*
 ...WIDTH
*
*
 
 ...HEIGHT
*
 
 
 ...NOWRAP
*
*
 
 ...BGCOLOR
*
 
 
 ...BORDERCOLOR
*
 
 
 ...BORDERCOLORLIGHT
*
 
 
 ...BORDERCOLORDARK
*
 
 
 ...BACKGROUND
*
 
 
<THEAD>  
*
 
 
<TITLE>  
*
*
*
<TR ...>  
*
*
*
 ...ALIGN
*
*
*
 ...VALIGN
*
*
*
 ...BGCOLOR
*
 
 
 ...BORDERCOLOR
*
 
 
 ...BORDERCOLORLIGHT
*
 
  
 ...BORDERCOLORDARK
*
 
 
<TT>  
*
*
*
<U>  
*
 
*
<UL>  
*
*
*
<VAR>  
*
*
*
<WBR>  
*
*
 
<XMP>  
*
*
*
  
(will translate special characters)