Calendar.setup(
	{
		inputField  : "df",          // ID of the input field
		ifFormat    : "%Y-%m-%d",    // the date format
		button      : "clickfrom"    // ID of the button
	}
);
Calendar.setup(
	{
		inputField  : "dt",         // ID of the input field
		ifFormat    : "%Y-%m-%d",  // the date format
		button      : "clickto"    // ID of the button
	}
);