function getValue(field) {
  var address = location.search.substring(1);
  var startExtract = address.indexOf(field + "=");
  if (startExtract > -1) {
    startExtract = startExtract + field.length + 1;
    var endExtract = address.indexOf("&",startExtract);
    if (endExtract == -1)
      endExtract = address.length;
    return unescape(address.substring(startExtract,endExtract));
  }
  return '';
}



function validate() {

	if (document.onlineform.realname.value=="") {
		alert("Please provide your name.");
		document.onlineform.realname.focus();
		return false;
	}

	if (document.onlineform.nationality.value=="") {
		alert("Please indicate your nationality.");
		document.onlineform.nationality.focus();
		return false;
	}

	if (document.onlineform.email.value=="") {
		alert("Please provide your e-mail address.");
		document.onlineform.email.focus();
		return false;
	}


/*	if (document.onlineform.submission(0).checked) { */

		if (document.onlineform.phone.value=="") {
			alert("Please provide your phone number.");
			document.onlineform.phone.focus();
			return false;
		}

		if (document.onlineform.occupancy.value=="") {
			alert("Please indicate the number of occupants.");
			document.onlineform.occupancy.focus();
			return false;
		}
		else if (isNaN(document.onlineform.occupancy.value)==true) {
			alert("Please enter a NUMERIC value for OCCUPANCY field.");
			document.onlineform.occupancy.focus();
			return false;
		}

		if (document.onlineform.rooms_required.value=="") {
			alert("Please enter number of rooms.");
			document.onlineform.rooms_required.focus();
			return false;
		}
		else if (isNaN(document.onlineform.rooms_required.value)==true) {
			alert("Please enter a NUMERIC value for NO. OF ROOMS field.");
			document.onlineform.rooms_required.focus();
			return false;
		}

		/* ------ validate check-in date ----- */

		var inMonth = document.onlineform.check_in_month.options[document.onlineform.check_in_month.selectedIndex].value;
		if (inMonth=="") {
			alert("Please indicate your Check-In Month.");
			document.onlineform.check_in_month.focus();
			return false;
		}

		var inDay = document.onlineform.check_in_day.options[document.onlineform.check_in_day.selectedIndex].value;
		if (inDay=="") {
			alert("Please indicate your Check-In Day.");
			document.onlineform.check_in_day.focus();
			return false;
		}

		var inYear = document.onlineform.check_in_year.options[document.onlineform.check_in_year.selectedIndex].value;
		if (inYear=="") {
			alert("Please indicate your Check-In Year.");
			document.onlineform.check_in_year.focus();
			return false;
		}


		/* ------ validate check-out date ----- */

		var outMonth = document.onlineform.check_out_month.options[document.onlineform.check_out_month.selectedIndex].value;
		if (outMonth=="") {
			alert("Please indicate your Check-Out Month.");
			document.onlineform.check_out_month.focus();
			return false;
		}

		var outDay = document.onlineform.check_out_day.options[document.onlineform.check_out_day.selectedIndex].value;
		if (outDay=="") {
			alert("Please indicate your Check-Out Day.");
			document.onlineform.check_out_day.focus();
			return false;
		}

		var outYear = document.onlineform.check_out_year.options[document.onlineform.check_out_year.selectedIndex].value;
		if (outYear=="") {
			alert("Please indicate your Check-Out Year.");
			document.onlineform.check_out_year.focus();
			return false;
		}

}