Great, thanks alot guys.

Got another question though...

Me and my friends will probably be in there smoking for quite a long long time. I just realised that sort of next to my bathroom, there is a smoke detector. Do you think I should maybe tape a towel or something over it? If all the smoke from the bathroom billows out real quick, it might send off the smoke alarm.

Speaking of smoke alarms, does anyone know if they automatically call the Fire department as soon as they start beeping?