From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:0.9) Gecko/20010505 BuildID: 2001050515 On http://home.infomaniak.ch/Mongenet/Marc/Articles/Ordinateur/achat3.html I have changed the standard list bullets into arrows image with CSS1. But sometime the image is not displayed correctly, as if the transprency were not working. Reproducible: Always Steps to Reproduce: 1. Go to <http://home.infomaniak.ch/Mongenet/Marc/Articles/Ordinateur/achat3.html> Watch for list "bullet" of "Table des matières", it should be an arrow <http://home.infomaniak.ch/Mongenet/Marc/Articles/Ordinateur/fleche_haut.gif> 2. Put another window on front of the browser window for a while (if no bug appeared at step 1) 3. Reload page (to correct the problem) Actual Results: The transparent part of the GIF is sometimes transparent and sometimes black.

http://www.mol.hu/site/magyar/indexjs.php Same problem but with transparent images on layers (absolutly positioned divs). Go over the menu, and the submenu will be visible. At first its OK, but go out with your mouse (sumnenu become hidden) and then back the left side (originally transparent) goes black.

*** This bug has been marked as a duplicate of 77914 ***

VERIFIED dup