41446 - Javascript unable to change visibility in CSS

Status: VERIFIED INVALID

(Core :: JavaScript Engine, defect, P3)

Description

[hirata masakazu]

While the page works without any trouble with NS4.7(style sheet enabled) and IE4.5, the  
JavaScript engine in M16 build 2000060208 does not work with the style sheets in this 
page.
I have no clue whether the trouble is in style sheet or Javascript except it does not work 
at all.

Comment 1

[Guillaume Filion]

*** This bug has been marked as a duplicate of 41317 ***

Comment 2

[Blake Ross]

No, I don't think so (if anything, it'd be a dup of 40143).  But I'm not even 
going to begin looking at this, because this entire page is based around layers 
which we no longer support anymore.  reporter: please attach a succint, clear 
testcase with no layers.  marking invalid for now.

Comment 3

[Blake Ross]

...inv

Comment 4

[hirata masakazu]

Attachment: This is the essential HTML showing the bug. Is this not supported anymore?

Comment 5

[John Morrison]

No, the '.layers' API is not supported in mozilla -- mozilla uses the W3C DOM 
standard, in conjunction with the CSS1 standard for style information.

See:  http://www.mozilla.org/newlayout/bugathon.html#layerbugs

However, this works in W3C DOM:
  if(document.getElementById)
      document.getElementById(layName).style.visibility='visible';

instead of what worked in Nav4.x
  if(document.layers)
    document.layers[layName].visibility='show';