/*

requires initialisation of the following variables:

curDay, curMonth (0-11), curYear

short month name array arrMonth



requires setting dates cookie as below BEFORE instantializing the TravDates object:

SetDatesCookie(<%=Day(varCheckin)%>, <%=Month(varCheckin)%>, <%=Year(varCheckin)%>, <%=Day(varCheckout)%>, <%=Month(varCheckout)%>, <%=Year(varCheckout)%>)

*/





// TRAVEL DATES OBJECT START



//travel dates object constructor

function TravDates(inYCtl, inMCtl, inDCtl, outYCtl, outMCtl, outDCtl, startBlank, numYears) {

	if (numYears == null) numYears = 3  //default number of years for the calendar



	//properties

	this.inYCtl = inYCtl

	this.inMCtl = inMCtl

	this.inDCtl = inDCtl

	this.outYCtl = outYCtl

	this.outMCtl = outMCtl

	this.outDCtl = outDCtl



	//methods

	this.SetDef = SetDefDates

	this.Validate = ValidateDates

	this.GetDate = GetSelDate

	this.SetDate = SetSelDate

	this.SetLenStay = SetLenStay



	//populate select boxes

	if (startBlank) {

		var presOpt = 0

	} else {

		var presOpt = -1

	}



	populateDay(inDCtl, presOpt)

	populateMonth(inMCtl, presOpt)

	populateYear(inYCtl, presOpt, numYears)

	populateDay(outDCtl, presOpt)

	populateMonth(outMCtl, presOpt)

	populateYear(outYCtl, presOpt, numYears)



	//set default values

	this.SetDef(startBlank)



	//instatialise calendar object

	if (!document.layers) {

		cal = new Calendar(numYears, SetCalDate)

		window.onfocus = new Function("if (cal.win) cal.win.close()")

	}





	//-----------------------





	//populate day select box

	function populateDay(ctl, presOpt) {

		clearSelect(ctl, presOpt)



		var newOpt



		for (var i = 1 + presOpt; i < 32 + presOpt; i++) {

			newOpt = i - presOpt

			ctl[i] = new Option(newOpt, newOpt)

		}

	}





	//populate month select box

	function populateMonth(ctl, presOpt) {

		clearSelect(ctl, presOpt)

		for (var i = 1 + presOpt; i < 13 + presOpt; i++) ctl[i] = new Option(arrMonth[i-1-presOpt], i-presOpt)

	}





	//populate year select box

	function populateYear(ctl, presOpt, numYears) {

		clearSelect(ctl, presOpt)



		var newOpt



		for (var i = 1 + presOpt; i <= numYears + presOpt; i++) {

			newOpt = i + curYear - 1 - presOpt

			ctl[i] = new Option(newOpt, newOpt)

		}

	}





	//clear options of select control

	function clearSelect(ctl, presOpt) {

		for (var i = ctl.options.length - 1; i > presOpt; i--) ctl.options[i] = null

	}

}





//set default dates

function SetDefDates(startBlank) {

	var defInD, defInM, defInY, defOutD, defOutM, defOutY



	if (

		GetQSVal("inDay") != "" && GetQSVal("inMonth") != "" && GetQSVal("inYear") != "" &&

		GetQSVal("outDay") != "" && GetQSVal("outMonth") != "" && GetQSVal("outYear") != ""

	) {  //if all dates were passed in querystring

		defInD = GetQSVal("inDay")

		defInM = GetQSVal("inMonth")

		defInY = GetQSVal("inYear")

		defOutD = GetQSVal("outDay")

		defOutM = GetQSVal("outMonth")

		defOutY = GetQSVal("outYear")

	} else if (GetQSVal("Checkin") != "" && GetQSVal("Checkout") != "") {  //if all dates were passed in querystring

		var dateParts = GetQSVal("Checkin").split("-")

		defInD = dateParts[2]

		defInM = dateParts[1]

		defInY = dateParts[0]



		dateParts = GetQSVal("Checkout").split("-")

		defOutD = dateParts[2]

		defOutM = dateParts[1]

		defOutY = dateParts[0]

	} else {

		//extract dates from cookie

		var oSECookie = GetDatesCookie()



		if (oSECookie.inDate == "") {  //there are no dates in cookie

			if (!startBlank) {

				//set default dates as follows:

				var defInDate = new Date(curYear, curMonth, curDay + 18)

				var defOutDate = new Date(curYear, curMonth, curDay + 20)



				defInD = defInDate.getDate()

				defInM = defInDate.getMonth() + 1

				defInY = defInDate.getFullYear()

				defOutD = defOutDate.getDate()

				defOutM = defOutDate.getMonth() + 1

				defOutY = defOutDate.getFullYear()

			}

		} else {

			//get defaults from cookie

			var inDArray = oSECookie.inDate.split("-")

			var outDArray = oSECookie.outDate.split("-")



			defInY = inDArray[0]

			defInM = inDArray[1]

			defInD = inDArray[2]

			defOutY = outDArray[0]

			defOutM = outDArray[1]

			defOutD = outDArray[2]

		}

	}



	//set dates

	if (!isNaN(defInD)) {

		this.SetDate(defInY, defInM, defInD, "in")

		this.SetDate(defOutY, defOutM, defOutD, "out")

	}

}





//validate dates and save them to cookie

function ValidateDates() {

	//check that both dates are selected

	if (SelEmpty(this.inDCtl) || SelEmpty(this.inMCtl) || SelEmpty(this.inYCtl) || SelEmpty(this.outDCtl) || SelEmpty(this.outMCtl) || SelEmpty(this.outYCtl)) {

		return false

	}



	var checkinDate = this.GetDate("in")

	var checkoutDate = this.GetDate("out")



	//validate checkin date

	if (!validDate(checkinDate, this.inDCtl)) {

		alert("Please select a valid Check-in Date.")

		this.inDCtl.focus()

		return false

	}



	var curDate = new Date(curYear, curMonth, curDay)



	if (checkinDate - curDate < 0) {

		alert("The Check-in Date you have selected is in the past.")

		this.inDCtl.focus()

		return false

	}



	//validate checkout date

	if (!validDate(checkoutDate, this.outDCtl)) {

		alert("Please select a valid Check-out Date.")

		this.outDCtl.focus()

		return false

	}



	//validate checkin - checkout difference

	if (checkoutDate - checkinDate > 2160000000) {  //25 days in milliseconds

		alert("Your period of stay should be not longer than 25 nights.\n\nIf you wish to book for more than 25 nights,\nplease send us an e-mail with your request.")

		this.outDCtl.focus()

		return false

	}



	if (checkoutDate - checkinDate <= 0) {

		alert("Please ensure that the Check-out Date is after the Check-in Date.")

		this.outDCtl.focus()

		return false

	}



	//save dates to cookie

	SetDatesCookie(GetSelVal(this.inDCtl), GetSelVal(this.inMCtl), GetSelVal(this.inYCtl), GetSelVal(this.outDCtl), GetSelVal(this.outMCtl), GetSelVal(this.outYCtl))



	return true





	//-----------------------





	//check that date select box has a not empty selection

	function SelEmpty(ctl) {

		if (GetSelVal(ctl) == "") {

			alert("Please select your Travel Dates.")

			ctl.focus()

			return true

		}



		return false

	}

}





//get date selected in dropdown boxes

function GetSelDate(inOut) {

	var y = GetSelVal(eval("this." + inOut + "YCtl"))

	var m = GetSelVal(eval("this." + inOut + "MCtl"))

	var d = GetSelVal(eval("this." + inOut + "DCtl"))



	if (y == "" || m == "" || d == "") {

		return new Date()

	} else {

		return new Date(y, m - 1, d)

	}

}





//set date into dropdown boxes (month 1 to 12)

function SetSelDate(year, month, day, inOut) {

	SetSelVal(eval("this." + inOut + "YCtl"), Number(year))

	SetSelVal(eval("this." + inOut + "MCtl"), Number(month))

	SetSelVal(eval("this." + inOut + "DCtl"), Number(day))



	//set length of stay

	this.SetLenStay()

}





//set length of stay

function SetLenStay() {

	if (document.all) {

		var stay = document.all.lenStay

	} else if (document.getElementById) {

		var stay = document.getElementById("lenStay")

	}



	if (stay) stay.innerHTML = Math.round((this.GetDate("out") - this.GetDate("in")) / 86400000) + " "	

}



// TRAVEL DATES OBJECT END





//save dates to cookie

function SetDatesCookie(inD, inM, inY, outD, outM, outY) {

	var oSECookie = GetDatesCookie()



	if (isNaN(inD) || isNaN(inM) || isNaN(inY) || isNaN(outD) || isNaN(outM) || isNaN(outY)) {

		oSECookie.inDate = ""

		oSECookie.outDate = ""

	} else {

		oSECookie.inDate = inY + "-" + inM + "-" + inD

		oSECookie.outDate = outY + "-" + outM + "-" + outD

	}



	document.cookie = 

		escape("|SearchEng|") + "=" +

		escape("|" + oSECookie.country + "|" + oSECookie.city + "|" + oSECookie.suburb + "|" + oSECookie.inDate + "|" + oSECookie.outDate + "|") +

		";path=/"

}





//returns object containing search engine cookie elements

function GetDatesCookie() {

	var oSECookie = new Object()



	oSECookie.country = ""

	oSECookie.city = ""

	oSECookie.suburb = ""

	oSECookie.inDate = ""

	oSECookie.outDate = ""



	var cookieArray = URLDecode(document.cookie).split("|")



	for (var i=0; i<cookieArray.length; i++) {

		if (cookieArray[i] == "SearchEng") {

			oSECookie.country = cookieArray[i+2]

			oSECookie.city = cookieArray[i+3]

			oSECookie.suburb = cookieArray[i+4]

			oSECookie.inDate = cookieArray[i+5]

			oSECookie.outDate = cookieArray[i+6]



			break

		}

	}



	return oSECookie

}