How to make firefox add-ons universally and not just on a particular user

I have install firefox add-ons no-script on root, but when I login as normal user the no-script add-ons is not installed.

Do anyone know how to make firefox add-ons universal?

thanks a lot!

It's all about where you put them. A FFx plugin for only one user goes in the home directory of that user ( to be exact). If you want them available system-wide then they would go somewhere like:
or This may vary from one system to another but it should be easy enough to find on yours.
Since I get FFx directly from the FFx website my own are in:
cheers,
jdk

from http://kb.mozillazine.org/Installing_extensions

i downloaded the noscript-1.9.2.8-fx+sm+fn.xpi into /root/download/firefox/add-ons/noscript/

from http://kb.mozillazine.org/Installing_extensions

"-install-global-extension "<path-to-extension>\extname.xpi"
"

I have done the following

"Copy the .xpi file into the <installation directory>\extensions folder."

I login as other users
[
When you start your Mozilla application again, it displays an installation dialog, asking "The following items were found in your Extensions folder. Do you want to install them?"
]

the above happens but I was still not able to install. I'm using centos 5.3

thanks

Your method sound wildly more complicated than the way I do it. What version of Firefox are you using? The noscript extension that I use is a java application. Can't you use the Tools->Add-ons menu item in Firefox to install it?
cheers,
jdk