Couldn't you insert Firefox invisibly between the keyboard and the plugin using an invisible window? Place an invisible window over the plugin. All user interaction would go to that window, which would then filter out any hotkeys, and pass the rest onto the plugin.
KEYPRESS -> OS -> FIREFOX's invisible window -> PLUGIN
Couldn't you insert Firefox invisibly between the keyboard and the plugin using an invisible window? Place an invisible window over the plugin. All user interaction would go to that window, which would then filter out any hotkeys, and pass the rest onto the plugin.
KEYPRESS -> OS -> FIREFOX's invisible window -> PLUGIN