Safari 1.x to 1.2.4, and possibly other versions, allows inactive windows to launch dialog boxes, which can allow remote attackers to spoof the dialog boxes from web sites in other windows, aka the "Dialog Box Spoofing Vulnerability," a different vulnerability than CVE-2004-1314.
http://secunia.com/secunia_research/2004-10/
http://secunia.com/multiple_browsers_dialog_box_spoofing_test/
http://secunia.com/advisories/12892
http://lists.apple.com/archives/security-announce/2004/Dec/msg00000.html