90150 - Layers appear incorrectly or not at all

Status: VERIFIED INVALID

(SeaMonkey :: General, defect)

Description

[alanjstr]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:0.9.2+) Gecko/20010709
BuildID:    2001070904

This is probably dependant on Bug 84101 and 24797.  One thing that's different:
 That page has a DHTML/Layers block on it as well, which is not rendering either.  

Just so you know what the javascript errors are:

I have a piece of javascript (http://www.geocities.com/alanjstr/js/killpopup.js
) that removes the geocities ads from the screen, on normal operation.  It does
it in two parts:  1.  closes the pop-up ad window (for older browsers) and 2. 
Closes the DHTML ad by 'clicking' its X.  

1 leaves some temporary artifacts on the screen (not reproducibly).  2 fails
because of the poorly written Geocities ad being broken.

Reproducible: Always
Steps to Reproduce:

Expected Results:  DHTML Layer on left side of screen with changing text

Comment 1

[Boris Zbarsky [:bzbarsky]]

Are you talking about the code in http://www.geocities.com/alanjstr/js/ticker.js ?

And is the bug that that code is doing nothing?

If so, this is invalid -- that code assumes that the browser has document.layers
or document.all.  Mozilla supports neither one.

Comment 2

[alanjstr]

Oh.  What is the Mozilla equivalent, then?

Comment 3

[Boris Zbarsky [:bzbarsky]]

see http://www.w3.org/DOM/ has the complete references...

Your code would probably use some combination of createTextNode and appendChild,
though Mozilla also supports .innerHTML for IE compatibility.

You would also want to use .style.top and .style.left to position.

Note: the same code should work for Mozilla and IE 5.5 or greater...

Comment 4

[alanjstr]

Of course I got that code from some web site, so I never really took the time 
to learn it.  Guess I need to step up my activity.  It currently works in IE 4+ 
and Netscape 4+.