New
#11
Ahh no I believe it has to have the extension installed, but you can always use Firefox portable from portableapps.com (Mozilla Firefox, Portable Edition | PortableApps.com - Portable software for USB, portable and cloud drives).
EDIT: As long as the extension is installed you can double click the file. Portable version you will probably have to click "Open with" or drag into FF.
^thanks duzz!