Work Offline（@Firefox Add-ons）Updated to 1.4

Version 1.4 — June 18, 2008 — 24 KB

* [Firefox 3] Modified em:maxVersion to 3.0.* in install.rdf.
* Fixed PrefListener was not deleted when a window was closed (Special thanks to Lewis Lv!).
* Supported zh-TW locale (Special thanks to n kc!).
* Fixed hu locale.