113129 - document.images doesn't fire properly

Status: VERIFIED DUPLICATE of bug 93461

(Core :: DOM: Events, defect)

Description

[Rob Stout]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.5) Gecko/20011011
BuildID:    2001101117

This is a simple onmouseover and onmouseout event that will swap images and a
2nd image will fire in another given table/td. Mozilla 0.9.3 and Netscape 6.1
and below will fire this very simple script with no difficulties. However,
Mozilla 0.9.4 and Netscape 6.2 will respond slowly if at all to the script. It's
an anoying bug and works in every other browser (Netscape 4x, Opera 5x and 6, IE
4x and higher)

Reproducable: Always
Steps to Reproduce:
1.Go to the website with Mozilla 0.9.4 and higher or Netscape 6.2, it's just
that easy

Actual Results:  the browser will respond slowly or very poorly when the mouse
over event occurs

Expected Results:  It should have handled the events like so many other browsers
do, without a problem.

I tryed updating the Java2 plug-in to v1.3.1_01a, no GO! it still does the same
thing.

Comment 1

[eberry]

  Mouseovers work fast/fine with build 2001-12-01-08 under W2K for me. Please
try with a nightly build from http://ftp.mozilla.org/pub/mozilla/nightly/latest/
if possible and then close this report if it works fine.  Also, in your bug
reports, please always state exactly what part of the page doesn't layout as
exptected, instead of more general descriptions like "another given table/td",
as described here: http://www.mozilla.org/quality/help/bugzilla-helper.html

Comment 2

[Rob Stout]

Ok, I was tired last night and didn't write down the details I should have, but 
the bug does exist. Try using the browser (0.9.4 and above, Netscape 6.2) on a 
slow connection (28.8kbps or less). The browser repeatedly will seek to find 
the images over the slow line instead of caching them into a temp directory. 
Yeah, it will work if you are on DSL, T1, or a LAN, but if your connection is 
slow, like I have, with a modem that never connects beyond 28.8 you will 
quickly see the continued recall of images from the remote server that should 
be cached locally and available to the browser.

O.9.3 and Netscape 6.1 and under work fine and properly cache the images. But, 
0.9.4 and above/Netscape 6.2 will not cache the images. Or they think the 
script is not preloading the images (I'm not sure, that's your job).

Investigate this issue with a slow connection. Do not use a simulator, use an 
actual dial-up connection that connects at 28.8 and you will quickly learn how 
the browser falls short of expectations.

Thank you.

Comment 3

[Matthias Versen [:Matti]]

Reporter: Please never touch the fields : Priority and target milestone of a bug !

Comment 4

[Boris Zbarsky [:bzbarsky]]

Duplicate of "images swapped via JS are loaded again and again from network"

*** This bug has been marked as a duplicate of 93461 ***

Comment 5

[Vladimir Ermakov]

verifying