Block Pop-up Windows

  By default, Firefox blocks annoying pop-up windows on web sites.
  Unchecking this optionpreference will disable pop-up blocking.


Some web sites make legitimate use of pop-up windows. Therefore, you can
  allow these sites to open pop-ups anyway. To do so, click
  Exceptions..., enter the site name, and click Allow.  To
  remove a web site from the list, select it and then click Remove
  Site. To clear the list completely, click Remove All Sites.


Load images automatically

  Firefox displays images in web pages by default.  Uncheck this
  optionpreference to disable images in web pages.


If you enable loading images automatically, the Exceptions...
  button lets you select sites from which images will not automatically load.
  The Exceptions... button lets you specify web sites that you wish
  to load (or not load) regardless of the setting of this preference. In the
  exceptions list, enter the site from which you want to allow or block images
  and click Allow to allow images, or click Block to block
  the images.

 

Enable JavaScript

  JavaScript is a scripting language commonly used to make web pages
  interactive.  However, it also makes certain annoying behaviors much easier to
  perform.  To disable JavaScript, uncheck this optionpreference.  However, note
  that disabling JavaScript may cause some sites to not work properly.  For more
  fine-grained control over what JavaScript can and cannot do, click
  Advanced....

   
 
Advanced JavaScript Settings

 


   
Move or resize existing windows

   
    Uncheck this optionpreference to disable moving and resizing windows
          using scripts.

   
Raise or lower windows

   
    Uncheck this optionpreference to make sure scripts cannot raise (bring
          to the front) or lower (send to the back) windows.

   
Disable or replace context menus

   
    Uncheck this optionpreference to prevent web pages from disabling or
          changing the Firefox context menu.

   
Hide the status bar

   
    Uncheck this optionpreference to force the status bar to be displayed in
          pop-up windows.

   
Change status bar text

   
    Uncheck this optionpreference to disable changes to status bar text (such
          as displaying scrolling text messages or preventing the link address from
          being displayed while the mouse is over a link).
 


   
 

Enable Java

    Java is a popular programming language for the Web.  A single Java program
    can run on many different kinds of computers, thus avoiding the need for
    programmers to create a separate version of a program for each kind of
    computer.  Uncheck this optionpreference to disable Java applets in
    Firefox.  Note that in order for Java applets to work,