/******************************
* Editable section -- Start --
******************************/
// DATE SETTINGS - EDIT AS REQUIRED
var daysinAdvance = 1; // Sets default days in advance from current date
var numberNights = 2;  // Sets default number of nights
var numberYears = 4; // Sets default number of years to display in year select list
var numberNightsMin = 1; // Sets minimum number of nights accepted
var imgDir = "images/cal/"; // Directory for the dynamic calendar script and images. Trailing slash must be included.

// FLAG SETTINGS ON/OFF - SET TO 1 FOR ON & 0 FOR OFF
var wdDisplay = 1; //weekday display
var numberNightsDisplay = 1; //number of nights display
var departDateDisplay = 1; //departure dates display
var departDateUpdate = 1; //auto update departure date

// WEEK DAY AND NUMBER NIGHTS TEXT - EDIT TEXT AS REQUIRED
var wdArray = new Array("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
var nightTxt = " Night";
var nightsTxt = " Nights";

// ERROR MESSAGE TEXT - EDIT TEXT AS REQUIRED
var invalidDateTxt = "Invalid Arrival Date. Please check number of days selected";
var invalidDatePriorTxt = "Arrival Date selected is prior Today's date. Please change...";
var invalidDepartDateTxt = "Invalid Departure Date. Please check number of days selected";
var invalidDepartTxt = "Departure Date is prior to Arrival Date selected. Please change...";
var invalidNightsTxt = "Sorry, reservations under "+numberNightsMin+" nights are not accepted.";
/******************************
* Editable section -- End --
******************************/

/**************************************************
* DO NOT CHANGE JAVASCRIPT SETTINGS BELOW THIS LINE
**************************************************/
//Days in each month Array
var aNumDays = new Array (31,0,31,30,31,30,31,31,30,31,30,31);

//Cancel out if no departure date display
if(departDateDisplay == 0) {
	numberNightsDisplay = 0;
	departDateUpdate = 0;
}

//Sets dates selected from dyncalendar
function calendarCallback(day, month, year, objName, formName) {
	if(objName == "calendarArrive"){
		document.forms[formName].fd.selectedIndex = day-1;
		document.forms[formName].fm.selectedIndex = month-1;
		document.forms[formName].fy.selectedIndex = year - document.forms[formName].fy.options[0].text;
		updateDates(document.forms[formName]);
		if(wdDisplay == 1) setWkd(formName, 1);
	}else{  //objName == calendarDepart
		document.forms[formName].td.selectedIndex = day-1;
		document.forms[formName].tm.selectedIndex = month-1;
		document.forms[formName].ty.selectedIndex = year - document.forms[formName].ty.options[0].text;
		if(wdDisplay == 1) setWkd(formName, 1);
	}
}

//Update form with selected dates
function updateDates(form, loadDates) {
	//check Leap Year
	if(form.fm.selectedIndex==1)  {
		var leapYear  = new Date (form.fy.options[form.fy.selectedIndex].text,form.fm.selectedIndex+1,1);
		var leapYear  = new Date (leapYear  - (24*60*60*1000));
		var numDaysInMonth = leapYear.getDate();
	}else{
		var numDaysInMonth = aNumDays[form.fm.selectedIndex];
	}
	// Update departure date only when loading the form and/or departDateUpdate is set to 1
	if(loadDates == 1 || departDateUpdate == 1) {
		var selectDate = new Date(form.fy.options[form.fy.selectedIndex].text, form.fm.selectedIndex, form.fd.selectedIndex);
		var setDate = new Date(selectDate.getTime() + ((numberNights+1) * 86400000));
		var setDay = setDate.getDate();
		var setMonth = setDate.getMonth();
		var setYear = setDate.getFullYear() - form.fy.options[0].text;
		var checkinDate = new Date(form.fy.options[form.fy.selectedIndex].text,form.fm.selectedIndex,form.fd.selectedIndex+1);
		var checkoutDate = new Date(form.ty.options[form.ty.selectedIndex].text,form.tm.selectedIndex,form.td.selectedIndex+1);
		if(checkinDate > checkoutDate) {
			if(setYear == form.ty.length) {
				form.td.options[30].selected=1;
				form.tm.options[11].selected=1;
				form.ty.options[form.ty.length-1].selected=1;
			} else {
				form.td.options[setDay-1].selected=1;
				form.tm.options[setMonth].selected=1;
				form.ty.options[setYear].selected=1;
			}
		}
	}
	if(form.fd.selectedIndex+1 > numDaysInMonth) {
		alert(invalidDateTxt);
		form.fd.selectedIndex = numDaysInMonth-1;
	}
}

function setWkd(form, calendar) {
	// change form object if returned from calendar
	if(calendar) form = document.forms[form];
	for (var i = 0; i < form.fy.length; i++) {
		if (form.fy.options[i].selected) var fyear = form.fy.options[i].text;
		if (departDateDisplay == 1 && form.ty.options[i].selected) var tyear = form.ty.options[i].text;
	}
	var checkinDate = new Date(fyear,form.fm.selectedIndex,form.fd.selectedIndex+1);
	if (departDateDisplay == 1) var checkoutDate = new Date(tyear,form.tm.selectedIndex,form.td.selectedIndex+1);
	var numNights = Math.round((checkoutDate - checkinDate) / 86400000);
	if (numNights == 1) numNights += nightTxt;
	else numNights += nightsTxt;
	//Set Days of the week display
if(wdDisplay == 1 && document.getElementById) {
		document.getElementById('inWd').firstChild.nodeValue = '';
		if (departDateDisplay == 1) document.getElementById('outWd').firstChild.nodeValue = '';
	}
	//Set number of nights display
	if(numberNightsDisplay == 1 && document.getElementById) document.getElementById('lengthStay').firstChild.nodeValue = numNights;
}

//Load current dates on form load
function LoadDates(form) {
	var curDate = new Date();
	var setDate = new Date(curDate.getTime() + (daysinAdvance * 86400000));
	var setDay = setDate.getDate();
	var setMonth = setDate.getMonth();
	var setYear = setDate.getFullYear() - form.fy.options[0].text;
	// Set Arrival Dates
	form.fd.selectedIndex = setDay-1;
	form.fm.selectedIndex = setMonth;
	form.fy.selectedIndex = setYear;
	// Set the Departure Dates
	updateDates(form, departDateDisplay);
	if(wdDisplay == 1 || numberNightsDisplay == 1) setWkd(form);
}

//Load current dates on form load
function checkDates(form) {
	var curDate = new Date();
	for (var i = 0; i < form.fy.length; i++) {
		if (form.fy.options[i].selected) var fyear = form.fy.options[i].text;
		if (departDateDisplay == 1 && form.ty.options[i].selected) var tyear = form.ty.options[i].text;
	}
	var checkinDate = new Date(fyear,form.fm.selectedIndex,form.fd.selectedIndex+2);
	if (departDateDisplay == 1) {
		if(form.tm.selectedIndex==1)  {
			var leapYear  = new Date (form.ty.options[form.ty.selectedIndex].text,form.tm.selectedIndex+1,1);
			var leapYear  = new Date (leapYear  - (24*60*60*1000));
			var numDaysInMonth = leapYear.getDate();
		}else{
			var numDaysInMonth = aNumDays[form.tm.selectedIndex];
		}
		if(form.td.selectedIndex+1 > numDaysInMonth) {
			alert(invalidDepartDateTxt);
			form.td.selectedIndex = numDaysInMonth-1;
			return false;
		}
		var checkoutDate = new Date(tyear,form.tm.selectedIndex,form.td.selectedIndex+2);
		var numNights = Math.round((checkoutDate - checkinDate) / 86400000);
	} else {
		var numNights = form.numnights.selectedIndex+1;
	}
	if(checkinDate.getTime() < curDate.getTime()) {
		alert(invalidDatePriorTxt);
		return false;
	}
	if(numNights < 1) {
		alert(invalidDepartTxt );
		return false;
	}
	if(numNights < numberNightsMin) {
		alert(invalidNightsTxt);
		return false;
	}
}

//Generate years options for year select list
function year_option(form){
	curDate = new Date();
	curYear = curDate.getFullYear();
	for(i = curYear ; i <= curYear+(numberYears-1) ; i++ ){
		document.write('<option value="' + i + '">' + i + '</option>');
	}
}