Finally, Firefox 23 removes the option to disable JavaScript from the Options pane -- and if you had JavaScript turned off, it has been turned back on.

Disable JavaScript from running in Firefox PDF Now, the ability to turn off JavaScript in PDF documents is effortless to get done, though not as straightforward as we would like.

Security experts today urged Adobe Reader and Acrobat users to disable the JavaScript option until a patch is issued for a just-disclosed vulnerability.