A public-service tech announcement to online CRRL patrons: both Microsoft and Mozilla have released updates to their web browsers, which I recommend you install if possible. These can be downloaded from the links below.
Internet Explorer 9 is only available for computers running Windows 7 or Windows Vista. It does not, tragically, support Windows XP, likely in an effort by Microsoft to encourage its customers to upgrade from the decade-old operating system. Firefox 4 is decidedly more inclusive, supporting Windows versions back to Windows 2000 (excluding Windows ME), as well as Mac OS X and Linux.