32 bit firefox on 64 bit fedora 18

running 32 bit firefox on 64 bit fedora 18 in order to present through web ex

http://fedorasolved.org/browser-solutions/firefox-32bit-on-x86-64-fedora

after following the instructions

setarch i386 firefox

Then enter

about:

i686 indicates 32 bit
x86_64 indicates 64 bit