how to use older java in firefox?

[scottatwittenberg]

ok. i have a client with a server that has an old version of java on it because i need it to access their pix firewall. installed BESx on it and that requires java 6 and internet exploder.
i know how to disable the newer version in IE, so i can connect to the pix. but i can't find where to disable the newer version in firefox.

i would like to use firefox with old java for the pix
and ie with new java for bes

if firefox doesn't allow this, does another browser? opera, chrome, safari? i need a browser that i can run with old java even though a newer version is installed to connect to the pix

thanks