155239 - JavaScript Rollover Preloading Hangs Status Bar

Status: RESOLVED DUPLICATE of bug 166428

(Core :: Layout: Images, Video, and HTML Frames, defect)

Description

[Joseph McLean]

When Mozilla 1.0 (and other versions, including past & current trunk builds)
uses BODY ONLOAD to preload a series of images for use in a "rollover"
situation, the blue bar that indicates page loading progress (in the lower-right
corner of the screen) hangs at 100%.  The "Transferring data from X..." message
in the lower-left also stays on screen.

This error does not appear for me when only ONE image is preloaded.  When 2-3
images are preloaded, the error happens sporadically, and when 4+ images are
loaded (for example, a large toolbar), the error is consistent.  However, the
entire rollover procedure does work as intended -- it's just a status bar issue. 

This error appears on my own site <http://www.joseph.ca> as well as rollover
demo sites like <http://www.uwplatt.edu/~web/wtc/rollover-final.html>, and
presumably any site that preloads images for rollovers.  I've tried different
variants of preloading code on my site, from hand-crafted to
Dreamweaver-generated.  It can't be a network error because I can get the same
problem from local browsing via my hard drive. 

So my questions are: 

a) Is this a universal error in Mozilla?
b) Is there "better" preloading code that I should be using instead?  

-Joseph

P.S. My site has several JavaScript functions -- the one that's causing this
error is welcomeMe(), called by BODY ONLOAD.

Comment 1

[Keyser Sose]

Confirmed. 

Mozilla 1.0

Windows 98

Markign new.

Comment 2

[Jim Dunn]

"mass" re-assigning of bugs from pav to myself

Comment 3

[Jim Dunn]

setting milestone

Comment 4

[Jim Dunn]

Attachment: Simplified Testcase

I created a very simple testcase (single onload image) that
shows the problem.  This is essentially the same as one of the 
originally submitted tests, just paired down for debugging purposes.

Comment 5

[Jim Dunn]

This was fixed by jag's checkin for 166428.
Any trunk build after 5/13 should now work.
THANKS JAG!


*** This bug has been marked as a duplicate of 166428 ***