Gran Paradiso (Firefox 3) Alpha 3

The third alpha version of Firefox 3 , codenamed Gran Paradiso, has been released . Public alpha and beta versions differ from the "night" trunk assemblies in relative stability and functional completeness. Both of them are intended solely for testing and  not for the end user . It should be noted that the previous version - Alpha 2 - became the first public alpha version after integrating the so-called reflow branch in December , which radically improved the rendering engine, which led to a massive "automatic" correction of many errors belonging to the conditional category "incremental reflow {inc} bugs", and made it possiblepassing the Acid2 test by the browser , designed to check the level of compliance of browsers with existing web standards. The main innovations of Gran Paradiso Alpha 3 (version of the Gecko engine 1.9a3 dated March 22) in relation to the previous alpha version:

• support for animated PNG files ( APNG );
• support for clientLeft and clientTop DOM attributes;
• support , which makes it possible to save the contents of online resources in the browser cache. This ensures that the resources needed for the web application to work will be available in the cache when the browser is offline. (In more detail: Marking Resources for Offline Use [English]);
• improved accuracy of rendering and scaling at different screen resolutions and when printing;
• implemented the “cycle collection” mechanism within the framework of XPCOM , which is able to detect situations when two implementations of an object contain another object, but none of them are contained in any other. Now both of these objects can be safely destroyed. Previously, the fact that each of the two objects contained the same object, did not allow the destruction of such objects;
• support for a cookie attribute HttpOnlythat marks a cookie as readable only at the request of the server and inaccessible to client scripts;
• new option in the settings: "Warn me when web sites try to redirect or reload the page" ("Warn me when sites try to redirect or reload the page"), which allows to inform the user when a meta element is present in the page HTTP-EQUIV=refresh;
• A number of features were restored regarding support for the SVG vector format, the functionality of which was disrupted in the Alpha 2 version.