function checkBooking()
{
	var pin  = document.getElementById("checkin").value;
	var pout = document.getElementById("checkout").value;
	var geo = document.getElementById("geoid").value; 

	if(geo.length != 0 && pin.length != 0 && pout.length != 0)
	{
			
			 sd = pin.substring(3,5);			
			 sm = pin.substring(0,2);
			 sy = pin.substring(6,10);


			 ed = pout.substring(3,5);
			 em = pout.substring(0,2);
			 ey = pout.substring(6,10);

			// chekin
			document.getElementById("sd").value = sd;
			document.getElementById("sm").value = sm;
			document.getElementById("sy").value = sy;
			// chekout
			document.getElementById("ed").value = ed;
			document.getElementById("em").value = em;
			document.getElementById("ey").value = ey;
			
			// validazione
			if(
				// chekin
				document.getElementById("sd").value != '' && 
				document.getElementById("sm").value != '' &&
				document.getElementById("sy").value != '' &&
				// chekout
				document.getElementById("ed").value != '' &&
				document.getElementById("em").value != '' &&
				document.getElementById("ey").value != '' &&
				document.getElementById("destination").value != '' &&
				document.getElementById("geoid").value != ''
			  )
			{
				document.booking_form.submit();					
			}
		
		}
}