Calendar.setup(
	{
		inputField  : "arrival",      // ID of the input field
		ifFormat    : "dd/mm/y",    // the date format
		button      : "arrival"    // ID of the button
	}
);

Calendar.setup(
	{
		inputField  : "departure",      // ID of the input field
		ifFormat    : "dd/mm/y",    // the date format
		button      : "departure"    // ID of the button
	}
);