The following returns 1 (which is MANUAL)
temp = System.getProperty("javaplugin.proxy.config.type");
when we use java plugin 1.4.2 with "Use Broswer Setting" set to true
(in the plugin control pannel) and the browser has a PAC file URL
in the form of a file URL, like file:///c:/new.pac.
Whereas instead of returning 1 System.getProperty should return 2,
which is AUTO.
A file URL pointing to Auto Configuration Script is a valid PAC location.