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 CALCalendarstylesheet = "/bookingform/calendar/stylesheet/Calendar.css"
var strMonthsOfYear = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
var datBookingStartDate = new Date('2008/7/12');
var datBookingEndDate = new Date('2008/9/3');
var objParentPageObj = "";
var datCurrentWorkingDate = "";
var datCurrentHoverDate = "";

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 ChangeDate(dayOver){
	datCurrentHoverDate = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + 1) + "/" + dayOver);
	document.getElementById("CALCurrentMonth").innerHTML = datCurrentHoverDate.getDate() + DayExtension(datCurrentHoverDate.getDate()) + " " + strMonthsOfYear[datCurrentHoverDate.getMonth()] + " " + datCurrentHoverDate.getFullYear();
}

function KillCalendar(){
	document.getElementById("CALPopUpCalendarAreaHoldingDIV").innerHTML = "";
	document.body.removeChild(document.getElementById("CALOUTArea"));
}

function SelectDate(dayOver){
	datCurrentHoverDate = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + 1) + "/" + dayOver);
	datCurrentWorkingDate = new Date(datCurrentHoverDate);
	objParentPageObj.value = datCurrentWorkingDate.getDate() + "/" + (datCurrentWorkingDate.getMonth() + 1) + "/" + datCurrentWorkingDate.getFullYear();
	KillCalendar();
}

function ChangeMonth(intMonthsToAdd){
	datCurrentHoverDate = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + intMonthsToAdd) + "/01");
	datCurrentWorkingDate = new Date(datCurrentHoverDate);
	BuildCalendar();
}

function BuildCalendar(){

	var newCalDiv = document.createElement('div');
	newCalDiv.id = "CALOUTArea";
	document.getElementsByTagName("body")[0].appendChild(newCalDiv);
	if(window.addEventListener){ 
		document.getElementById("CALOUTArea").addEventListener('click', KillCalendar, false);
	}else{
		newCalDiv.attachEvent('onclick', KillCalendar);
	}
	// Get current month of working date
	var intCurrentMonth = datCurrentWorkingDate.getMonth();
	// Get current last day of working date
	var tmpdatNumDaysInMonth = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + 2) + "/" + "00");
	// Get number of days in month
	var tmpdatNumDaysofWeek = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + 1) + "/" + "01");
	// if first day Sunday then set first day to 6 else set to 0
	if(tmpdatNumDaysofWeek.getDay() == 0) {intResetDaysOfWeekForMonday = 6;}else{intResetDaysOfWeekForMonday = tmpdatNumDaysofWeek.getDay() -1;}
	var intNumDaysInMonth = tmpdatNumDaysInMonth.getDate();
	var strStringOfCalendar = "";
	
	// Start building calendar
	strStringOfCalendar = "<div class=\"CALPopUpCalendar\"><div class=\"CALCalendar\">";
	strStringOfCalendar += "<div class=\"CALTop\"><div class=\"RELtext\">Raileurope.co.uk</div><div class=\"CloseButton\"><img src=\"/bookingform/images/CloseButtonOverlay.png\" alt=\"Close calendar window\" width=\"10\" height=\"10\" onclick=\"javascript:KillCalendar();\"/></div></div>";
	strStringOfCalendar += "<div class=\"CALHeadLine\">";
	strStringOfCalendar += "<div class=\"CALMonthmoveLeft\"><img src=\"/bookingform/images/ButtonOverlay.png\" alt=\"Select your date of travel\" width=\"17\" height=\"17\"  onclick=\"ChangeMonth(0);\"/></div>"
	strStringOfCalendar += "<div id=\"CALCurrentMonth\" class=\"CALCurrentMonth\">" + datCurrentHoverDate.getDate() + DayExtension(datCurrentHoverDate.getDate()) + " " + strMonthsOfYear[datCurrentHoverDate.getMonth()] + " " + datCurrentHoverDate.getFullYear() + "</div>";
	strStringOfCalendar += "<div class=\"CALMonthmoveRight\"><img src=\"/bookingform/images/ButtonOverlay.png\" alt=\"Select your date of travel\" width=\"17\" height=\"17\"  onclick=\"ChangeMonth(2)\"/></div>"	
	strStringOfCalendar += "</div>";
	strStringOfCalendar += "<div class=\"CALContentContainer\"><div class=\"CALDaysLine\">";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">M</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">T</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">W</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">T</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">F</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">S</div>";
	strStringOfCalendar += "<div class=\"CALDaysLineElement\">S</div>";
	strStringOfCalendar += "</div>";
	
	strStringOfCalendar += "<div class=\"CALDayLine\">";
	
	for(var tmpDaysInMonthCount = 1; tmpDaysInMonthCount <= intResetDaysOfWeekForMonday; tmpDaysInMonthCount++){
		strStringOfCalendar += "<div class=\"CALDayLineElement\">&nbsp;</div>";
	}
	for(var tmpDaysInMonthCount = 1; tmpDaysInMonthCount <= intNumDaysInMonth; tmpDaysInMonthCount++){
		var tmpBuildingDate = new Date(datCurrentWorkingDate.getFullYear()  + "/" + (datCurrentWorkingDate.getMonth() + 1) + "/" + tmpDaysInMonthCount);
		if(intDaysToBook > 0){
			if((tmpBuildingDate >= datBookingStartDate) && (tmpBuildingDate <= datBookingEndDate)){
				strStringOfCalendar += "<div onclick=\"SelectDate(" + tmpDaysInMonthCount + ");\" onmouseover=\"this.className='CALDayLineElementSeletableHover';ChangeDate(" + tmpDaysInMonthCount + ");\" onmouseout=\"this.className='CALDayLineElementSeletable';\" class=\"CALDayLineElementSeletable\" >";
			}else{
				strStringOfCalendar += "<div class=\"CALDayLineElement\">";
			}
		}else{
			if(arrOfDateToUse != "undefined"){
				if(arrOfDateToUse.length > 0){
					intfound = 0;
					for(var tmpC = 0; tmpC < arrOfDateToUse.length; tmpC ++){
						var tmpD = new Date(arrOfDateToUse[tmpC]);
						if(tmpD.toString() == tmpBuildingDate.toString()){
							intfound = 1;
							strStringOfCalendar += "<div onclick=\"SelectDate(" + tmpDaysInMonthCount + ");\" onmouseover=\"this.className='CALDayLineElementSeletableHover';ChangeDate(" + tmpDaysInMonthCount + ");\" onmouseout=\"this.className='CALDayLineElementSeletable';\" class=\"CALDayLineElementSeletable\" >";		
						}
					}
					if(intfound==0){strStringOfCalendar += "<div class=\"CALDayLineElement\">";	}
				}else{
					strStringOfCalendar += "<div class=\"CALDayLineElement\">";		
				}
			}else{
				strStringOfCalendar += "<div class=\"CALDayLineElement\">";		
			}
		}
		strStringOfCalendar += tmpDaysInMonthCount ;
		strStringOfCalendar += "</div>";	
		intResetDaysOfWeekForMonday ++;
		if(intResetDaysOfWeekForMonday == 7){
			intResetDaysOfWeekForMonday = 0;
			strStringOfCalendar += "</div>";
			strStringOfCalendar += "<div class=\"CALDayLine\">";
		}
	}
	
	for(var tmpDaysInMonthCount = intResetDaysOfWeekForMonday; tmpDaysInMonthCount <= 6; tmpDaysInMonthCount++){
		strStringOfCalendar += "<div class=\"CALDayLineElement\">&nbsp;</div>";
	}
	strStringOfCalendar += "</div></div>";
	strStringOfCalendar += "<div class=\"PhoneNo\">Travelling within 7 days? Call 08448 484 051</div></div></div>";
	
	document.getElementById("CALPopUpCalendarAreaHoldingDIV").innerHTML = strStringOfCalendar;

}

function findObjectsPosX(obj){
	var tmpLeft = 0;
	tmpLeft = obj.offsetLeft;
	while(obj.tagName != "BODY" && obj.tagName != "HTML"){
		var obj = obj.offsetParent;
		tmpLeft += obj.offsetLeft +7.5;
	}
	return(tmpLeft);
}

function findObjectsPosY(obj){
	var tmpLeft = 0;
	tmpLeft = obj.offsetTop;
	while(obj.tagName != "BODY" && obj.tagName != "HTML"){
		var obj = obj.offsetParent;
		tmpLeft += obj.offsetTop -15 ;
	}
	return(tmpLeft);
}

function TestForParentDate(objToUpdate){
	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 = datBookingStartDate.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 = (datBookingStartDate.getFullYear() + "").substr(0,2) + tmpValue[2];			
				}
			}
			if(tmpValue[1] > 12) {tmpValue[1] = 12;}
			if(tmpValue[0] > 31) {tmpValue[0] = 31;}
			datCurrentSelectedDate = new Date(parseInt(tmpYear) + "/" + parseInt(tmpValue[1]) + "/" + parseInt(tmpValue[0]));
		}else{
			datCurrentSelectedDate = new Date(datBookingStartDate);
		}
	}else{
		datCurrentSelectedDate = new Date(datBookingStartDate);
	}
	return(datCurrentSelectedDate);
}


function StartCalendar(objToUpdate, objCalledFrom, objParent){
if(bolBrowserOK == true){
	try{
		arrOfDateToUse = arrAllowedDates;
	}catch(err){
		arrOfDateToUse = "undefined";
	}
	if(arrOfDateToUse != "undefined"){
		if(arrOfDateToUse.length > 0){
			intDaysToBook = 0;
			datCurrentWorkingDate = new Date(arrOfDateToUse[0]);
			datCurrentHoverDate = new Date(datCurrentWorkingDate);
			objParentPageObj = objToUpdate;
		}
	}else{
		CalDays();
		datBookingEndDate = new Date(datBookingStartDate.getFullYear() + "/" + (datBookingStartDate.getMonth() + 1) + "/" + (datBookingStartDate.getDate() + intDaysToBook));
		objParentPageObj = objToUpdate;
		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 = datBookingStartDate.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 = (datBookingStartDate.getFullYear() + "").substr(0,2) + tmpValue[2];			
					}
				}
				if(tmpValue[1] > 12) {tmpValue[1] = 12;}
				if(tmpValue[0] > 31) {tmpValue[0] = 31;}
				datCurrentSelectedDate = new Date(parseInt(tmpYear) + "/" + parseInt(tmpValue[1]) + "/" + parseInt(tmpValue[0]));
			}else{
				if(objParent){
					datCurrentSelectedDate = new Date(TestForParentDate(objParent));
				}else{
						datCurrentSelectedDate = new Date(datBookingStartDate);
				}
			}
		}else{
				if(objParent){
					datCurrentSelectedDate = new Date(TestForParentDate(objParent));
				}else{
						datCurrentSelectedDate = new Date(datBookingStartDate);
				}
		}

		// Makes sure passed date is within bounds of start/end dates
		if(datCurrentSelectedDate < datBookingStartDate){ datCurrentSelectedDate = datBookingStartDate;}
		if(datCurrentSelectedDate > datBookingEndDate){ datCurrentSelectedDate = datBookingEndDate;}
		datCurrentWorkingDate = new Date(datCurrentSelectedDate);
		datCurrentHoverDate = new Date(datCurrentSelectedDate);
	
	}
	
	BuildCalendar();
	document.getElementById("CALPopUpCalendarAreaHoldingDIV").style.left = findObjectsPosX(objCalledFrom) + "px";
	document.getElementById("CALPopUpCalendarAreaHoldingDIV").style.top = ((findObjectsPosY(objCalledFrom) + objCalledFrom.offsetHeight) + 3) + "px";
	return false;
}else{
	alert("Please enter the date in the following format dd/mm/yyyy.");
}
}

function LoadCalendarParameters(){
	var newCalDiv = document.createElement('div');
	newCalDiv.id = "CALPopUpCalendarAreaHoldingDIV";
	document.getElementsByTagName("body")[0].appendChild(newCalDiv);
	
	var newSS=document.createElement('link');
	newSS.rel='stylesheet';
	newSS.type='text/css';
	newSS.href=escape(CALCalendarstylesheet);
	document.getElementsByTagName("head")[0].appendChild(newSS);
}

if(bolBrowserOK == true){
	onload = LoadCalendarParameters;
}