Sun Microsystems does Java, so you may find what your looking for at sun.com/
java script will be under tools options in firefox its under web features
Assuming she is on the Firefox bandwagon. And I have had to download java plugins from sun to allow java in firefox/ie to work.
I’m just throwing caution to the wind here.
It shouldn’t be, and should never have been called “java” script. Since it leads to confusion with Java. It should just be called webscript (or ECMAscript, the standard version).
explains it all.
But yeah, no plug-in necessary.