revisions, useful now that stylesheet var is enabled

[Jeff K. <jt...@ad...>]

Thanks for the quick update to enable the stylesheet variables. Here are
a couple of quick improvements that will enable us to write more precise
stylesheets:

1) replace type=submit|checkbox|radio with
class=submit|checkbox|radio type=submit|checkbox|radio

This enables optional "input.checkbox {}" granularity in our
stylesheets.

I ran these replace commands in the bin/mozilla directory and it didn't
seem to introduce any bugs:

replace 'type=radio' 'class=radio type=radio' -- *
replace 'type=submit' 'class=submit type=submit' -- *
replace 'type=checkbox' 'class=checkbox type=checkbox' -- *


2) And not really stylesheet related:
(menu.pl)
FRAME NAME="bottom_menu" SCROLL="no"

Adding the SCROLL="no" removes the unnecessary scroll on the bottom
frame, the text appears too low without it.

Could you work these into the source tree?