CLOUD13

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 blink 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.

Thunderstorm

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

This is one form of a marquee for Internet Explorer

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.

Star Trek

<IMG DYNSRC="images/st11.html" START="MOUSEOVER" LOOP=3 ALT="Star Trek" CONTROLS>

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