Restricting mime types handled by kpartsplugin for firefox

[Roderick Johnstone]

Hi

Anyone know how to easily restrict the mime types that the firefox 
plugin part of kpartsplugin handles? I need to configure this system 
wide for all users.

I'd just want to use it for embedding pdf documents in firefox using 
okular, but it seems to want to handle loads of other mime types too.

Thanks

Roderick Johnstone