relation of ISMAP to URL

Dave Kristol (dmk@allegra.att.com)
Wed, 12 Apr 95 17:38:32 EDT

A colleague asked the question below. I didn't know how to answer
him. I don't think the HTML 2.0 (or 3.0?) specification states how a
browser should modify the anchor URL surrounding an ISMAP image when it
sends the augmented URL to a server. That behavior seems to fall into
a gray area between HTML and HTTP.

FWIW, I advised my colleague to change what he calls the "base URL" to
http://foo/----/mapprog/bar

Dave Kristol

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Suppose I have a ISMAP IMG reference in an html doc.
The base URL is of the form http://foo/----/mapprog?name=bar.
Question: what should the browser client do when appending
the x & y coordinates when I click on the image?

It seems that Mosaic appends ?x,y, so the result url is
http://foo/----/mapprog?name=bar?123,456
while Netscape replaces the stuff after the ?, and asks for
http://foo/----/mapprog?123,456

Which is the "correct" behaviour in this case?

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