Import a *.p12 File stocked in HardDisk to CertStore with JSS/NSS...

Hi all...
So i write here cause i think some of u have encounter this problem.

I'm actually working for an application and i need to import a .p12
File ( store on the Hard Disk ) to Cert Store of Browser.
I have search into API Docs of JSS and i never find the way to import
this *.p12..

There is a method called "importUserCACertPackage" in CryptoManager
but i can't find the way to use it...

if Someone can help ....
Thx for any comments or docs :)
Cheers
Florian Proch