thomas@localhost ~ $ eselect java-nsplugin list
Available 32-bit Java browser plugins
  [1]   emul-linux-x86-java-1.4.2 
  [2]   emul-linux-x86-java-1.6  current
Available 64-bit Java browser plugins
thomas@localhost ~ $ eselect java-nsplugin show
Current Java browser plugin
  blackdown-jre-1.4.2       
thomas@localhost ~ $ sudo eselect java-nsplugin set 32bit 2
thomas@localhost ~ $ eselect java-nsplugin show
Current Java browser plugin
  blackdown-jre-1.4.2