For all you people who have been looking for a way to get Vista’s glass effect in Firefox, look no further. Here is an extension for Firefox 3 that will do it. Please read this entire article before install this extension.
THIS IS ALPHA QUALITY
This extension is alpha quality, I whipped it together quickly.
In the javascript file I used a portion of the code from the MinimizeToTray extension. It’s license stands for that portion that I am aware of.
Known Issues
It will work on the Vista Basic theme, but will not produce the blue toolbars as Windows Explorer does, this will still a work in progress.
Install
Download: Glasser Installer (XPI)
To install Glasser, first download the file, then drag and drop it to your Firefox window.
If you want the Windows Explorer style background on the personal toolbar, use this css file. You can install it with either the Stylish Add-on, or by edit your userChrome.css file.
If you want to remove the menu-bar, try either Personal Menu or Hide Menubar. Both support using the Alt key to temperately show the menu-bar and Personal Menu lets you keep a button on the toolbar to gain access to the menus.
Source: Neowin
By the way this made my Firefox (Minefield) crash multiple times. It did work for a while, but because it’s alpha there will of course be issues. I can’t wait for it to release in final version form!