Fixes: Fixed: 449436 - Land Tracemonkey in mozilla-central, preffed off. (Tracemonkey promises much faster JavaScript execution speed. Blog posts: brendan, andreas, shaver, schrep, jresig. Use the 'tracemonkey' hg branch for serious testing.) Fixed: 437152 - Implement worker threads. Fixed: 447917 - Implement ElementTraversal. Fixed: 356295 - Implement Drag and Drop (WHATWG). Fixed: 435425 - Support progress events for XHR. Fixed: 238072 - Support positioned and floated generated content for non-replaced elements. Fixed: 224692 - [Windows] ...

In 2006, Mike Beltzner filed a bug saying that Firefox's about:config should have a warning. Chris Thomas wrote a patch adding a warning page, and it was checked in with a playful title suggested by the same Mike Beltzner: "Be careful, this gun is loaded!". Some people thought the reference to guns made Firefox too violent. After much discussion, Beltzner changed the title to "This might void your warranty!", which was a suggestion from Phil ...

Firefox 3 added support a new CSS color keyword, transparent. Surprisingly, this broke some sites, many of which had rules like table { color: transparent; } due to a Microsoft FrontPage bug. The strangest part: Firefox wasn't the first major browser to support transparent. Safari was. These sites were broken in Safari too — until the webmasters got emails from Firefox users. Is Safari's market share really so low that even when Safari is the ...

Fixes: Fixed: 395980 - Implement Ctrl+Tab panel to go to previously selected tabs, with an overlay panel showing tab thumbnails (Boriss's blog entry). Fixed: 10713 - Implement CSS3 'text-shadow' property. Fixed: 212633 - Implement CSS3 'box-shadow' property. Fixed: 378217 - Implement CSS3 'border-image' property. Fixed: 75375 - Support CSS3 :nth-*() pseudo-classes. Fixed: 128585 - Support CSS3 :first-of-type, :only-of-type, and :last-of-type pseudo-class selectors. Fixed: 421765 - Implement DOM 3 replaceWholeText and wholeText. Fixed: 436904 - Implement ...