FWIW, my results are identical to Jon's, except perhaps for the fact that TenFourFox displays the NYSE-EuroNext - Global Derivatives title on the first page, and the actual data on the second (with nothing on the third). In addition, Preview/PDF-prints from neither browser include the right hand sidebar (Find it Fast, Contract Info, In this section) or the bottom links.
And while it doesn't seem to play a role here, it's good to remember that different printers (drivers/settings) may produce variations too.
