var bolBrowserOK = false;

version=0;

if(navigator.appVersion.indexOf("MSIE")!=-1){
 	temp = navigator.appVersion.split("MSIE");
	version = parseFloat(temp[1]);
	if (version>=5.5){
		bolBrowserOK = true;
	}
}else{
	if(navigator.userAgent.indexOf("Firefox")!=-1){
		var versionindex = navigator.userAgent.indexOf("Firefox") + 8;
		if(parseInt(navigator.userAgent.charAt(versionindex))>=1){
			bolBrowserOK = true;
		}
	}
}


var theMonths = new Array("January", "Febuary", "March", "April", "May", "June", "July", "August", "Spetember", "October", "November", "December");

var SystemDate = new Date("2008/07/12");
var intSpecialDaysForDisneyLandParis = -469

function DayExtension(xDay){
	val = "";
	switch (parseInt(xDay)){
		case 1:
		case 21:
		case 31:
			val = "st";
			break;
		case 2:
		case 22:
			val = "nd";
			break;
		case 3:
		case 23:
			val = "rd";
			break;
		default:
			val = "th";
			break;
	}	
	return val;
}

function CalDays(){
	if(document.expressForm.ORIGINE.value.substr(3,2) == "ST" || document.expressForm.DESTINATION.value.substr(3,2) == "ST"){
		if(document.expressForm.ORIGINE.value.substr(0,2) == "FR" && document.expressForm.DESTINATION.value.substr(0,2) == "FR"){
			intDaysToBook = 90;
		}else{
			if((document.expressForm.ORIGINE.value.substr(0,2) == "UK" && document.expressForm.DESTINATION.value.substr(0,2) == "FR") || (document.expressForm.ORIGINE.value.substr(0,2) == "FR" && document.expressForm.DESTINATION.value.substr(0,2) == "UK")){
				intDaysToBook = 90;
			}
		}
	}

	if(document.expressForm.ORIGINE.value.substr(3,2) == "ES" && document.expressForm.DESTINATION.value.substr(3,2) == "ES"){
		if((document.expressForm.ORIGINE.value.substr(0,2) == "UK" && document.expressForm.DESTINATION.value.substr(0,2) != "UK") || (document.expressForm.ORIGINE.value.substr(0,2) != "UK" && document.expressForm.DESTINATION.value.substr(0,2) == "UK")){
			intDaysToBook = 120;
		}else{
			intDaysToBook = 90;
		}
	}
	
	if((document.expressForm.ORIGINE.value.substr(0,2) == "UK" && document.expressForm.DESTINATION.value == "FR,ES,MARNE LA VALLEE") || (document.expressForm.ORIGINE.value == "FR,ES,MARNE LA VALLEE" && document.expressForm.DESTINATION.value.substr(0,2) == "UK")){
		intDaysToBook = intSpecialDaysForDisneyLandParis;
	}
}

function makeDate(objToUpdate){
	datCDate = "";
	var tmpValue = objToUpdate.value.split("/");
	if(tmpValue.length == 3){
		if((isNaN(tmpValue[0]) == false) && (isNaN(tmpValue[1]) == false) && (isNaN(tmpValue[2]) == false) && (tmpValue[0] != "") && (tmpValue[1] != "") && (tmpValue[2] != "")){
			if(tmpValue[2].length > 4){
				var tmpYear = SystemDate.getFullYear();
			}else{
				if(tmpValue[2].length == 4){
					var tmpYear = tmpValue[2];
				}else{
					if(tmpValue[2].length == 3) { tmpValue[2] = tmpValue[2].substr(1,2); }
					if(tmpValue[2].length == 1) { tmpValue[2] = "0" + tmpValue[2]; }
					var tmpYear = (SystemDate.getFullYear() + "").substr(0,2) + tmpValue[2];			
				}
			}
			if(tmpValue[1] > 12) {tmpValue[1] = 12;}
			if(tmpValue[0] > 31) {tmpValue[0] = 31;}
			datCDate = new Date(tmpYear + "/" + tmpValue[1] + "/" + tmpValue[0]);
		}
	}
	return(datCDate);
}

var intDaysToBook = 60;



function TestForm(){
if(bolBrowserOK == true){
	if((document.expressForm.DESTINATION.value == "  ,  ,SNOWTRAIN") || (document.expressForm.ORIGINE.value == "  ,  ,SNOWTRAIN")){
		window.location.href = "http://www.raileurope.co.uk/snowtrains/snowtrain_bookingform.asp";
		return false;
	}
	
	var strErr = '';

	CalDays();

	var departdate = new Date(makeDate(document.expressForm.LeavingOn));
	var returndate = new Date(makeDate(document.expressForm.ReturningOn));
	
	var endDate = new Date(SystemDate.getFullYear() + "/" + (SystemDate.getMonth() + 1) + "/" + (SystemDate.getDate() + intDaysToBook));
	
	
	if(returndate.toString().length > 0){
		if(returndate > endDate){
			strErr = "Your return date is to far in the furture. You can only make bookings up to " + endDate.getDate() + DayExtension(endDate.getDate().toString()) + " " + theMonths[endDate.getMonth()] + " " + endDate.getYear() + " for this route.";
		}
	
		if(returndate < SystemDate){
			strErr = "Your return date must be after " + SystemDate.getDate() + DayExtension(SystemDate.getDate().toString()) + " " + theMonths[SystemDate.getMonth()] + " " + SystemDate.getYear();
		}
		if(returndate < departdate){
			strErr = "Your return date must be after your depature date.";
		}
		
	}
		
	if(departdate > endDate){
		strErr = "Your depature date is to far in the furture. You can only make bookings up to " + endDate.getDate() + DayExtension(endDate.getDate().toString()) + " " + theMonths[endDate.getMonth()] + " " + endDate.getYear() + " for this route.";
	}
	

	if(departdate < SystemDate){
		strErr = "Your depature date must be after " + SystemDate.getDate() + DayExtension(SystemDate.getDate().toString()) + " " + theMonths[SystemDate.getMonth()] + " " + SystemDate.getYear();;
	}

	if(document.expressForm.DESTINATION.value == "  ,  ,"){
		strErr = "Please select a destination station.";
	}

	if(document.expressForm.ORIGINE.value == "  ,  ,"){
		strErr = "Please select a depature station.";
	}

	if(document.expressForm.LeavingOn.value == ""){
		strErr = "Please enter a depature date.";
	}

	if((departdate == "") || (isNaN(departdate) == true)){
		strErr = "Please enter a correctly formated date. (dd/mm/yyyy)";
	}


	
	if(strErr != ""){
		alert(strErr);
	}else{
		document.expressForm.submit();
	}
}else{
		document.expressForm.submit();
}
	
}