dom.disable_window_open_feature.close
TRUE forces the close button to always be displayed (recommended).
dom.disable_window_open_feature.directories
TRUE prevents the bookmarks toolbar from being hidden in this way.
dom.disable_window_open_feature.location
TRUE prevents the Address bar from being hidden.
dom.disable_window_open_feature.menubar
TRUE disables the hiding of the Menu bar.
dom.disable_window_open_feature.minimizable
TRUE enables the minimizing of such windows (recommended).
dom.disable_window_open_feature.resizable
FALSE forces the close button to always be displayed (recommended).
dom.disable_window_open_feature.scrollbar
TRUE disables the hiding of the Scroll bar in windows.
dom.disable_window_open_feature.status
TRUE force the status bar to be displayed at all times.
dom.disable_window_open_feature.titlebar
TRUE forces the Title bar to always be displayed
dom.disable_window_open_feature.toolbar
? TRUE prevents the hiding of the Navigation toolbar.
dom.event.contextmenu.enabled
FALSE scripts can't be used to alter, or even disable the context menu, e.g. right clicking could be disabled on certain pages
dom.popup_maximum (Integer).
This value specifies the maximum number of pop-up windows that may be open simultaneously.
Personally I've set this to 5.