Per the screenshot here it looks like the Quick Java buttons are supposed to automatically appear on the Navigation Toolbar. If the buttons aren't there look to the Add-0n Bar at the bottom of the browser window. ''When I used that extension 4 or 5 years ago, the buttons appeared at the bottom on the old Statusbar, which was replaced by the Add-on Bar.''<br /> https://addons.mozilla.org/en-US/firefox/addon/quickjava/ Usage: * Left click the corresponding icon to enable/disable an option (Javascript, Images, ect.) or plugin (Java, Flash, Silverlight) * When disabled an icon indicating it is disabled via red will be displayed * Middle click any icon icon to toggle ALL of the options with one click. (Handy if you normally keep them all on and want to turn them all on/off easily) * Right click any icon for an options dialog to be able to hide unwanted icons from the Statusbar or configure advanced options. * Toolbar support Install the extension and restart your browser to get the Statusbar icons. Configure the options to display which Statusbar icon's you would like, customize the toolbar with which buttons you choose and enjoy. It's that simple!