Castling

How would I castle in the following position given that neither the king has not moved. 

You can't.

black k. has moved and white lacks a rook    .....u cannot castle. White has one move---tip the king over !                     

IIRC, click the king, then the rook.

Omg at the above comments. Just bring the rook over the King to f1.

King stays put. It's kingside castling.

Edit, yes, I realised white's king has moved. The white king should've started at g8. Iirc in chess960 both balck and white have to mirror each other across the board.

The two above me didn't realize it was 960. The white king is there only because the diagram couldn't be created without it.

nice one