Fix broken scrollbar on FF 3.6.  Refactor select disable code.  See https://bugs.edge.launchpad.net/bookreader/+bug/536974
Fix broken scrollbar on FF 3.6.  Refactor select disable code.  See https://bugs.edge.launchpad.net/bookreader/+bug/536974

gootdude/bookreader,yankl/bookreader,nikolas/bookreader,brisandbeans/bookreader,garyrh/bookreader,openlibrary/bookreader,nikolas/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader,niksu/bookreader,yankl/bookreader,yankl/bookreader,gootdude/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader,brisandbeans/bookreader,yankl/bookreader,garyrh/bookreader,garyrh/bookreader,brisandbeans/bookreader,niksu/bookreader,niksu/bookreader,Islandora/internet_archive_bookreader,openlibrary/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader,Islandora/internet_archive_bookreader,brisandbeans/bookreader,niksu/bookreader,brisandbeans/bookreader,niksu/bookreader,internetarchive/bookreader,gootdude/bookreader,yankl/bookreader,gootdude/bookreader,garyrh/bookreader,garyrh/bookreader,internetarchive/bookreader