Browser Specific HTML Extensions
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Netscape Navigator
Netscape Navigator supports the following extensions to the HTML 3.2 specification:
- <NOBR>...</NOBR>
- Do not insert a line break, regardless
of the width of the document window
- <WBR>
- Wrap text at this point before another, if wrapping is necessary
- <BLINK>...</BLINK>
- Cause the enclosed text to
incessantly
- <EMBED>...</EMBED>
- Used for embedding inline multimedia such as
as sound and video files
Here is an example of an <EMBED> tag used for inline sound from the main page of
the presentation during our first session:
<EMBED SRC="sounds/mapleafrag.mid"
NAME="mainSnd"
VOLUME=35
WIDTH=5
HEIGHT=5
HIDDEN=TRUE
MASTERSOUND>
- <FRAMESET>...</FRAMESET>
- Defines a set of frames
- <FRAME>...</FRAME>
- Defines a frame in a <FRAMESET>
- <NOFRAMES>...<NOFRAMES>
- Defines content to be used if frames
are not supported by browser
- LOWSRC="..."
- Attribute of IMG Element defining a low
resolution version of image to load before
the larger, high resolution file is received
This image will load a low resolution version of 20KB in size first, followed by the
full quality version of 284KB second.
- FACE="..."
-
Comma delimited list of Fonts from the most
to the least desired. The browser scans the
users system to determine if the specified
font is available, and uses it to display
the text, or the default if not available.
- BORDER="..."
- Defines border size for tables
This table has a border width of 3 pixels |
- <MULTICOL COLS="number" (required)
GUTTER="gwidth"
WIDTH="colwidth">
- Defines columns for text displayed newspaper
style.
This text is displayed using three columns for the set up,
20 pixels for the gutter size and no column width specified, so it is up to the browser.
This is usually safer to allow for different screen sizes.
This is suitable for short blocks of text, but large blocks of text leave the user in
a situation where they must keep scrolling up and down to continue reading the
information. You also have virtually no control over where the text actually breaks to the
next column.
Internet Explorer
Microsoft's Internet Explorer has introduced these extensions to the HTML specification:
- BGPROPERTIES="FIXED"
- This attribute of the BODY element locks the
background in place so that the contents of the
scroll while the background remains stationary.
This presents a unique problem of its own.
- <BGSOUND>
- This element is for embedding sound files in an
HTML document. File types supported are: AU
(myew-law), WAV (WaveForm) and MID (MIDI); and the
attributes for this element are: SRC="..." and
LOOP="..."
- <MARQUEE>...</MARQUEE>
- Create a scrolling marquee in the
document
Most HTML elements are not recognized when included within the MARQUEE element itself,
but HTML elements such as FONT will affect the contents of the MARQUEE if the MARQUEE
is enclosed inside.
- DYNSRC="..."
- Attribute for the IMG Element used to insert
inline movie clips in .AVI (Audio/Video Interleave)
format. Includes:
START="FILEOPEN|MOUSEOVER|CLICK"
and LOOP="..." and CONTROLS attributes
to allow control of the movie clip.
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