Re: ALT specification

lilley (lilley@afs.mcc.ac.uk)
Tue, 20 Jun 1995 11:56:46 +0100 (BST)


From: lilley <lilley@afs.mcc.ac.uk>
Message-Id: <2899.9506201056@afs.mcc.ac.uk>
Subject: Re: ALT specification
To: jonathan@ecn.purdue.edu (Jonathan L Neuenschwander)
Date: Tue, 20 Jun 1995 11:56:46 +0100 (BST)
Cc: www-html@www10.w3.org
In-Reply-To: <199506200855.DAA20601@widget.ecn.purdue.edu> from "Jonathan L Neuenschwander" at Jun 20, 95 03:55:23 am

Jonathan L Neuenschwander said:
> 
> I'll second the plea for more than just text inside ALT. 

See my reply, about HTML 3.0 FIG.

> One thing I've 
> discovered users seem to expect is that an imagemap be replaced with a 
> a menu when images are turned off.  

  <A HREF="http://site/cgi/bettermap">
  <IMG SRC=imagemap.gif ALT="Here is the menu" ISMAP></A>
  
The image map handler is in a position to return such a menu, because 
the map file contains all the URLs. It would be pretty simple to modify 
the map handlers that come with NCSA or CERN httpd to do this.

And of course a FIG does this sort of thing without any round trip to 
the server, and the menu can have as much pretty formatting and explanatory 
text as you want. See:

  http://www.hpl.hp.co.uk/people/dsr/html/figures.html

Another option is to use client-side imagemaps. The client can then 
provide feedback when you move the pointer over a hotzone in the image. 
See the above URL, and also as an internet draft:

  draft-ietf-html-clientsideimagemap-00.txt 
  
from the usual internet draft mirrors. For example,

http://www.ics.uci.edu/pub/ietf/html/draft-ietf-html-clientsideimagemap-00.txt

-- 
Chris Lilley, Technical Author
+-------------------------------------------------------------------+
|       Manchester and North HPC Training & Education Centre        |
+-------------------------------------------------------------------+
| Computer Graphics Unit,             Email: Chris.Lilley@mcc.ac.uk |
| Manchester Computing Centre,        Voice: +44 161 275 6045       |
| Oxford Road, Manchester, UK.          Fax: +44 161 275 6040       |
| M13 9PL                            BioMOO: ChrisL                 |
|     URI: http://info.mcc.ac.uk/CGU/staff/lilley/lilley.html       | 
+-------------------------------------------------------------------+
|     "The first W in WWW will not wait."   Fran=E7ois Yergeau        |
+-------------------------------------------------------------------+