Function EmptyW3DButton(bn)
	If BankSize(W3DButton_Bank)<(bn*4) Then
		ResizeBank(W3DButton_Bank,bn*4)
	Else
		FreeW3DButton(bn)
	EndIf
	PokeInt W3DButton_Bank,(bn-1)*4,0
End Function
;+ FreeW3DButton