Revert "overflow-y: scroll is better than huge length"
Revert "overflow-y: scroll is better than huge length"

This reverts commit 0d203747eb83f6e3a60716f3a621b108cbe0adcd
because IE7 got unhappy.  (Of course, IE6 was fine.)

alcy/perlweb,ajolma/perlweb,Abigail/perlweb,dagolden/perlweb,briandfoy/perlweb,autarch/perlweb,PeterMartini/perlweb,PeterMartini/perlweb,dagolden/perlweb,briandfoy/perlweb,dagolden/perlweb,briandfoy/perlweb,ajolma/perlweb,autarch/perlweb,alcy/perlweb,alcy/perlweb,Abigail/perlweb,autarch/perlweb,bjakubski/perlweb,Abigail/perlweb,PeterMartini/perlweb,bjakubski/perlweb,ajolma/perlweb,bjakubski/perlweb