/**
 * Booking Panel Class
 * 
 * 
 * @author Tim Stirrat <tim.stirrat@gmail.com>
 * @author Scott Mackenzie
 * @version SVN: $Revision: 13141 $
 * 
 * @class BookingPanel
 */
var BookingPanel = Class.create(
{
	/**
	 * Stores the error box objects
	 * 
	 * @type Array
	 */
	_error_box: [],
	
	/**
	 * The html form element
	 * 
	 * @type Element
	 */
	_form: null,


	/**
	 * Turns on encryption and request filtering (currently for VA only).  If turned off, the panel posts directly to amadeus
	 * 
	 * @type boolean
	 */
	_filter_search: false,

	
	/**
	 * The hidden form element
	 * 
	 * @type Element
	 */
	hiddenFormElem: null,
	

	/**
	 * Turns on the var dump page
	 * 
	 * @type boolean
	 */
	debugVars: false,
	
	
	/**
	 * The Vaustralia message panel
	 * 
	 * @type AjaxMessagePanel
	 */
	vaustMessagePanel: null,

	/**
	 * Initializes the Booking Panel
	 * 
	 * @constructor
	 */
	initialize: function (elem, options)
	{
		this.options = {
			show_countries:	false,
			countries: 			false,
			cities:					false,
			errors:					false,
			prefs: 					false,
			test_server: 		false,
			debug_vars:			false,
			filter_search:  false,
			default_engine:	'vb',
			corporate_id:   'OCG-MUCWW28AA'
		};

		Object.extend(this.options, options || { });

		this._cities            = this.options.cities;
		this._countries         = this.options.countries;
		this._test_server       = this.options.test_server;
		this._default_engine    = this.options.default_engine;
		this.debugVars          = this.options.debug_vars;
		this._filter_search     = this.options.filter_search;

		// global variable
		bp_engine               = this._default_engine;
		
		// get first form
		this._form = elem.getElementsByTagName('form')[0];
		this._error_box = new ErrorBox();
		
		this.assignEvents();
		
		this.setOrigin(this.getOriginCookie());
	},

	/**
	 * Binds even listeners
	 */
	assignEvents: function ()
	{
		// trip type radios
		Event.observe($('bp-round'), 'click', this.setTripType.bind(this));
		Event.observe($('bp-oneway'), 'click', this.setTripType.bind(this));
		// city selects
		Event.observe($('bp-from'),	'change', this.originChangeListener.bind(this));
		Event.observe($('bp-to'),	'change', this.checkToCity.bind(this));
		// find flights
		Event.observe($('bp-submit'), 'click', this.validate.bindAsEventListener(this));
		//Event.observe($('btn-submit'), 'click', this.validate.bindAsEventListener(this));

	},

	/**
	 * Sets return or one way
	 */
	setTripType: function ()
	{
		if ($('bp-oneway').checked)
		{
			$('bp-day-return').disabled = 'disabled';
			$('bp-month-return').disabled = 'disabled';
			// disable the calendar date picker
			if (typeof(cal_objs) != 'undefined') {
				if (cal_objs.length >= 2)
					cal_objs[1].disable();
			}
		}
		else
		{
			$('bp-day-return').disabled = false;
			$('bp-month-return').disabled = false;
			// enable the calendar date picker
			if (typeof(cal_objs) != 'undefined') {
				if (cal_objs.length >= 2)
					cal_objs[1].enable();
			}
		}
	},

	/**
	 * Origin changed event handler
	 */
	originChangeListener: function ()
	{
		this.setDestinationCities($('bp-from').value);
	},

	/**
	 * Sorts contries
	 */
	sortCountries: function (countriesOrder)
	{
		var temp;
		for( var i=0 ; i<countriesOrder.length ; i++ )
		{
			for( var j=0 ; j<bp_flights_show_only_countries.length ; j++)
			{
				if( bp_flights_show_only_countries[j] == countriesOrder[i] )
				{
					temp = bp_flights_show_only_countries[i];
					bp_flights_show_only_countries[i] = bp_flights_show_only_countries[j];
					bp_flights_show_only_countries[j] = temp;
				}
			}
		}
	},

	/**
	 * Populates the destination list depending on the origin selection
	 * bp_flights_remove_cities and bp_flights_show_only_countries added to avoid clash with Holidays/Hotels tab
	 */
	setDestinationCities: function (origin_city)
	{ 
		this.checkToCity();
		curr_city = origin_city;
		if (typeof(bp_priority_cities) == 'undefined') {
			bp_priority_cities = new Array();
		}
		if(typeof(bp_flights_show_only_countries) == 'undefined')
		{
			bp_flights_show_only_countries = bp_show_only_countries;
		}
		if(typeof(bp_flights_remove_cities) == 'undefined')
		{
			bp_flights_remove_cities = bp_remove_cities;
		}
		// if no show only list is set, fill out the array
		// with the default list
		if ( bp_flights_show_only_countries.length <= 0 ) {
			for (var i in bp_countries) {
				bp_flights_show_only_countries.push(i);
			}
		}
		if ( bp_site == 'va' && bp_country_of_residence == 'au' )
		{
			// Order the destination cities for AU facing VAustralia
			var countriesOrder = new Array('US', 'CA', 'ZA', 'TH' );
			this.sortCountries( countriesOrder );
		}

		// clear the to select list
		$('bp-to').length = 0;
		
		// clear the market warning panel
		el = $('bp-marketwarning');

		if (el) {
			el.style.display = 'none';
		}
		
		// create Destination default option
		this.createSelectOption($('bp-to'), '', 'Destination', false, '');
		
		last_country = '';
		//alert('flights: ' + bp_flights_remove_cities + ' ' + bp_flights_show_only_countries);
		for ( i = 0; i < bp_flights_show_only_countries.length; i++ ) {
			if (curr_city) {
				for ( x = 0; x < bp_cities[curr_city].ports.length; x++ ) {
					
					country 	= bp_flights_show_only_countries[i]
					iata 		= bp_cities[curr_city].ports[x];
					port_city 	= bp_cities[iata];
					
					if ( country == port_city.country ) {
						
						if (bp_flights_remove_cities.indexOf(iata) == -1) {
							
							if (country != last_country && bp_show_countries) {
								
								 if (bp_show_only_cities.length > 0) {
									
									for ( y = 0; y < bp_show_only_cities.length; y++ ) {
										
										if (bp_cities[bp_show_only_cities[y]].country == country && country != last_country && bp_show_only_cities.indexOf(iata) != -1) {
											
											// this removes Thailand for PER->HKT from the VA bpanel (only) as its a VB flight (and all other HKT flights are VA)
                			// --stirratt
                			//if (bp_site == 'va' && $('bp-from').value == 'PER' && country == 'TH') {
												// do nothing
												// c o nsole.log('removed th');
											//} else {

											// We're not adding each port.
											// For now, don't add dest:Nadi if it's not orig:Sydney.
											if (bp_site == 'va' && country == 'FJ' && $('bp-from').value != 'SYD') {
												// Do nothing.
											} else {
												this.createSelectOption($('bp-to'), '', '----- ' + bp_countries[country].name.toUpperCase() + bp_countries[country].dash, true, 'bp-country');

												// add capital/priority cities
												var capitalsCount = 0;
												for (var cnt = 0; cnt < bp_priority_cities.length; cnt ++) {
													var capital = bp_priority_cities[cnt];
													if ( bp_remove_cities.indexOf(capital) == -1 && (bp_show_only_cities.length == 0 || bp_show_only_cities.indexOf(capital) > -1) && bp_cities[capital].country == country && bp_cities[curr_city].ports.indexOf(capital) > -1 ) {
														this.createSelectOption($('bp-to'), capital, bp_cities[capital].name, false, 'bp-priority');
														capitalsCount ++;
													}
												}
												if (capitalsCount) {
													this.createSelectOption($('bp-to'), '', '------------------------------------------------', true, 'bp-priority');
												}
											}
											//}
											last_country = country;
										}
									}
								} else {
									this.createSelectOption($('bp-to'), '', '----- ' + bp_countries[country].name.toUpperCase() + bp_countries[country].dash, true, 'bp-country');
									last_country = country;

									// add capital/priority cities
									var capitalsCount = 0;
									for (var cnt = 0; cnt < bp_priority_cities.length; cnt ++) {
										var capital = bp_priority_cities[cnt];
										if ( bp_remove_cities.indexOf(capital) == -1 && (bp_show_only_cities.length == 0 || bp_show_only_cities.indexOf(capital) > -1) && bp_cities[capital].country == country && bp_cities[curr_city].ports.indexOf(capital) > -1 ) {
											this.createSelectOption($('bp-to'), capital, bp_cities[capital].name, false, 'bp-priority');
											capitalsCount ++;
										}
									}
									if (capitalsCount) {
										this.createSelectOption($('bp-to'), '', '------------------------------------------------', true, 'bp-priority');
									}
								}
							}
							if (bp_show_only_cities.length <= 0) {
									
									this.createSelectOption($('bp-to'), iata, port_city.name, false);
							}
							if (bp_show_only_cities.length > 0 && bp_show_only_cities.indexOf(iata) != -1) {
								// this removes PER->HKT from the VA bpanel (only) as its a VB flight (and all other HKT flights are VA)
                // --stirratt
								//if (bp_site == 'va' && $('bp-from').value == 'PER' && iata == 'HKT') {
									// do nothing
									// c o nsole.log('d');
								//} else {
								
								// We're not adding each port.
								// For now, don't add dest:Nadi if it's not orig:Sydney.
								if (bp_site == 'va' && port_city.name == 'Nadi' && $('bp-from').value != 'SYD') {
									// Do nothing.
								} else {
									this.createSelectOption($('bp-to'), iata, port_city.name, false);
								}
							}
						}
					}
				}
			}
		}
		
		// set the selected value to the bp_default_dest if it exists
		if (typeof(bp_default_dest) != 'undefined') {
			if (bp_default_dest.length > 0) {
				for ( i = 0; i < $('bp-to').options.length; i++ ) {
					if ($('bp-to').options[i].value == bp_default_dest) {
						$('bp-to').options[i].setAttribute('selected', 'selected');
						$('bp-to').selectedIndex = i;
					}
				}
			}
		}
		
		// give message as to why destination drop down is empty
		if ($('bp-to').length == 1) {
			if (curr_city) {
				this.createSelectOption($('bp-to'), '', 'No results for ' + bp_cities[curr_city].name, false, '');
			} else {
				this.createSelectOption($('bp-to'), '', 'Please select an origin above', false, '');
			}
		}
	},

	/**
	 * Shows or hides the amadeus travel class fields
	 */
	checkToCity: function ()
	{
		// check if the city is part of the armadeus array and if so show the 
		// hidden row
		el = $('bp-travelclass-row');
		if (el) {
			if (bp_site != 'va') {
				if (this.checkAmadeusCities()) {
					el.style.display = 'block';
				} else {
					el.style.display = 'none';
				}
			}
		}

		// checks for a certain combination of city pairs and shows a warning
		el = $('bp-marketwarning');
		if (el) {
			if (this.checkCityPairForWarning()) {
					el.innerHTML = this.getCityPairWarningText();
					el.style.display = 'block';
			} else {
					el.innerHTML = '';
					el.style.display = 'none';
			}
		}
	},

	/**
	 * Is there likely to be a warning for certain city pairs?
	 */
	checkCityPairForWarning: function ()
	{
		return this.getCityPairWarningText();
	},

	/**
	 * Get the exact city pair warning message
	 */
	getCityPairWarningText: function ()
	{
		if ( ($('bp-from').value && bp_cities[$('bp-from').value].country == 'TH') || ($('bp-to').value && bp_cities[$('bp-to').value].country == 'TH') && bp_site == 'va' )
		{
			return 'Please Note:&nbsp; V Australia will no longer operate direct services to/from Thailand via Brisbane (effective 20th Feb, 2011) or via Melbourne (effective 21st Feb, 2011). Flights to Thailand will be available via Perth (visit <a style="color:#CC0000;text-decoration:none;" href="www.virginblue.com.au">www.virginblue.com.au</a> for more details) after these dates.';
		}
		
		if ( ($('bp-from').value && bp_cities[$('bp-from').value].country == 'ZA') || ($('bp-to').value && bp_cities[$('bp-to').value].country == 'ZA') )
		{
			return 'Please Note: From 22nd Feb 2011 V Australia will no longer operate services to and from South Africa.';
		}
	},

	/**
	 * Determines if the amadeus engine is to be used
	 */
	checkAmadeusCities: function ()
	{
		var depart_d = Number( $('bp-day-depart').value );
		var depart_m = Number( $('bp-month-depart').value.substring(4,6) );
		var depart_y = Number( $('bp-month-depart').value.substring(0,4) );
		var start_date = new Date(depart_y, (depart_m - 1), depart_d);

		var return_d = Number( $('bp-day-return').value );
		var return_m = Number( $('bp-month-return').value.substring(4,6) );
		var return_y = Number( $('bp-month-return').value.substring(0,4) );
		var end_date = new Date(return_y, (return_m - 1), return_d);

		iWednesday = 3; // wednesday = day of week '3' in Date.getDay()

		// exception for HKT: use amadeus if on va site
		if ( ($('bp-to').value == 'HKT' || $('bp-from').value == 'HKT') && bp_site == 'va' ) {
			return true;
		}
		// exception for HKT: use amadeus if departing from NZ
		if ( $('bp-to').value == 'HKT' && bp_cities[$('bp-from').value].country == 'NZ' ) {
			return true;
		}

		// exception for SYD -> NAN from 18 Dec 2009 onwards use VA (except on wednesdays...), else use VB
		var depart_date = Number($('bp-month-depart').value) * 100 + Number($('bp-day-depart').value);
		if ( ($('bp-from').value == 'SYD' && $('bp-to').value == 'NAN') && depart_date >= 20091218 && bp_site != 'vb' ) {
			// ticket 235911 - if one or more travel date is on a wednesday, use VB, else VA
			if (start_date.getDay() == iWednesday || end_date.getDay() == iWednesday) {
				return false;
			}
			return true;
		}
		
		// otherwise detect as normal
		if (amedeus_cities.indexOf($('bp-to').value) != -1 || amedeus_cities.indexOf($('bp-from').value) != -1) {
			return true;
		}
	},

	/**
	 * Creates an <option> tag
	 */
	createSelectOption: function (select_elem, value, text, disabled, css_class)
	{
		o = document.createElement('option');
		o.value = value;
		if (disabled) o.disabled = 'disabled';
		if (css_class) o.className = css_class;
		o_text = document.createTextNode(text);
		o.appendChild(o_text);
		select_elem.appendChild(o);
	},

	/**
	 * Sets an origin manually
	 */
	setOrigin: function (iata)
	{
		
		found = false;
		option_els = Element.childElements($('bp-from'));
		
		for (i = 0; i < option_els.length; i++) {
			if (option_els[i].value == iata) {
				found = true;
			}
		}
		
		// set destinations cities
		if (typeof(bp_default_dest) != 'undefined') {
			this.setDestinationCities($('bp-from').value);
		} else if (iata.length == 3 && found) {
			$('bp-from').value = iata;
			this.setDestinationCities($('bp-from').value);
		} else {
			$('bp-from').selectedIndex = 0;
		}
	},

	/**
	 * Gets the cookied origin
	 */
	getOriginCookie: function ()
	{
		c_name 	= "vborigin";
		c		= ' ' + document.cookie + ';';
		c_start	= c.indexOf(c_name) + (c_name.length + 1);	
		c_end 	= c.indexOf(';', c_start);
		c_data 	= unescape(c.substring(c_start, c_end));
		return c_data;
	},

	/**
	 * Sets the origin cookie
	 */
	setOriginCookie: function ()
	{
		// before submitting, set a cookie for the selected origin
		d = new Date();
		d.setTime(d.getTime() + 2000*24*60*60*1000);
		d = d.toGMTString();
		cookie_name = "vborigin";
		document.cookie	= cookie_name + '='+ escape($('bp-from').value)+ '; expires=' + d + '; path = /'
	},

	/**
	 * Validates the corrent booking panel state
	 */
	validate: function (event)
	{
		if (event) {
			event.stop();
		}
		this.validateCities();
		this.validateDates();
		this.validatePax();
		
		if (this._error_box._errors.length > 0) {
			this._error_box._error_ref = eval(bp_engine+'_errors');
			this._error_box.show();
		} else {
			this.generateHiddenForm();
			
			// bp_site and bp_engine are globals
			if (bp_site == 'vb' && bp_engine == 'va') {
				var thisobj = this;
				var timeout = function () { thisobj.submit() };
    			window.setTimeout(timeout, 4000);
				this.showVaustMessage();
			} else {
				if (bp_engine == 'va')
				{
					this.submit();
				}
				else
				{
					FindFlights();
				}
			}
		}
	},
	
	/**
	 * Shows the vaustralia redirect warning message
	 */
	showVaustMessage: function ()
	{
		var path = '';
		
		if (typeof(bp_path) != 'undefined') {
			path = bp_path;
		}
	
		var mURL = path + 'vaustralia_message.php'
		
		this.vaustMessagePanel = new AjaxMessagePanel('vaust-message', mURL);
		this.vaustMessagePanel.show();
	},
	
	/**
	 * Shows the vaustralia redirect warning message
	 */
	closeVaustMessage: function ()
	{
		if (typeof(this.vaustMessagePanel) != 'undefined')
		{
			this.vaustMessagePanel.close();
		}
	},

	/**
	 * Validates the chosen city pairs
	 */
	validateCities: function ()
	{
		// always reset engine to default
		bp_engine = this._default_engine;
		
		// check a departing city has been selected
		tmp = ($('bp-from').value == '' || $('bp-from').value == -1);
		this._error_box.evalError(tmp, 'missingDepartCity');
		
		// check a return city has been selected

		tmp2 = ($('bp-to').value == '' || $('bp-to').value == -1);
		this._error_box.evalError(tmp2, 'missingArriveCity');

		// if no error check city against amadeus array
		if (!tmp && !tmp2) {
			// amedeus_cities is a global array :)
			if (this.checkAmadeusCities()) {
				bp_engine = 'va';
			}
		}

		var testNZHKTNoReturn = this.validateNZHKTNoReturn();
		this._error_box.evalError(testNZHKTNoReturn, 'HKTReturnOnly');

		var testLHRNoReturn = this.validateLHRNoReturn();
		this._error_box.evalError(testLHRNoReturn, 'HKTReturnOnly');
	},

	/**
	 * Validates the chosen dates
	 */
	validateDates: function ()
	{
		
		// check a return date is not before the departing date// if round trip
		today = new Date();
		
		// check if global start date variable exists
		if ( typeof(bp_start_date) != 'undefined' ) {
			today_date  = new Date(bp_start_date[2], bp_start_date[1]-1, bp_start_date[0]);
			va_start_date  = new Date(bp_start_date[2], bp_start_date[1]-1, bp_start_date[0]);
		} 
		// otherwise use todays date
		else {
			today_date  = new Date(today.getFullYear(), today.getMonth(),today.getDate());
			va_start_date  = new Date('1900', '12', '31');
		}
		
		depart_d = $('bp-day-depart').value;
		depart_m = $('bp-month-depart').value.substring(4,6);
		depart_y = $('bp-month-depart').value.substring(0,4);
		
		depart_date = new Date(depart_y, (depart_m - 1), depart_d);
		
		// days of the month validation
		tmp = this.validateDayMonth(Number(depart_d), Number(depart_m)) ? true : false;
		this._error_box.evalError(tmp, 'monthDaysDepart');
		
		// leap year for february validation
		if (Number(depart_m) == 2) {
			tmp = this.validateLeapYear(Number(depart_d), Number(depart_m), depart_y) ? true : false;
			this._error_box.evalError(tmp, 'monthDaysDepart');
		}

      // traveling dates validation - HKT/JNB date warnings

      // Phuket
			if ($('bp-from').value != 'PER') {
				tmp = this.validateHKTStartDate(Number(depart_d), Number(depart_m), depart_y);
            
      	this._error_box.evalError(tmp, 'badHKTDate');
			}

      // Johannesburg
			tmp = this.validateJNBStartDate(Number(depart_d), Number(depart_m), depart_y);
    		this._error_box.evalError(tmp, 'badJNBDate');	
		
		tmp = (today_date.getTime() > depart_date.getTime()) ? true : false;
		//this._error_box.evalError(tmp, 'departdateEarly');

		if (today_date.getTime() == va_start_date.getTime()){
			this._error_box.evalError(tmp, 'departdateEarlyb');
		}
		else {
			this._error_box.evalError(tmp, 'departdateEarly');
		}
		
		if ($('bp-round').checked) {
			
			return_d = $('bp-day-return').value;
			return_m = $('bp-month-return').value.substring(4,6);
			return_y = $('bp-month-return').value.substring(0,4);
			
			return_date = new Date(return_y, (return_m - 1), return_d);
			
			// days of the month validation
			tmp = this.validateDayMonth(Number(return_d), Number(return_m)) ? true : false;
			// this._error_box.evalError(tmp, 'monthDaysReturn');
			this._error_box.evalError(tmp, 'monthDaysDepart');
			
			// leap year for february validation
			if (Number(return_m) == 2) {
				tmp = this.validateLeapYear(Number(return_d), Number(return_m), return_y) ? true : false;
				// this._error_box.evalError(tmp, 'monthDaysReturn');
				this._error_box.evalError(tmp, 'monthDaysDepart');
			}
			
			// make sure departing date is before return date
			tmp = (depart_date > return_date) ? true : false;
			this._error_box.evalError(tmp, 'dateDiff');
			
			// make sure return date isn't before today
			tmp = (today_date.getTime() > return_date.getTime()) ? true : false;
			this._error_box.evalError(tmp, 'returndateEarly');
			
		}
	},

	/**
	 * Validates leap year dates
	 */
	validateLeapYear: function (d, m, y)
	{
		
		error = false;
		leap = 0;
		
		if ((y % 4 == 0) || (y % 100 == 0) || (y % 400 == 0)) {
		  leap = 1;
		}
		if ((m == 2) && (leap == 1) && (d > 29)) {
		  error = true;
		}
		if ((m == 2) && (leap != 1) && (d > 28)) {
		  error = true;
		}
		
		return error;
	},

	/**
	 * Validates the day of month is _not_ 31 on months which have 30 days
	 */
	validateDayMonth: function (d, m)
	{
		
		error = false;
		
		if ((d > 30) && ((m == 4) || (m == 6) || (m == 9) || (m == 11))) {
		  error = true;
		}
		
		return error;
	},

	/**
	 * Validates the PER-> HKT start dates
	 */
	validatePERHKTStartDate: function (d, m, y)
	{
		// not HKT? break early.
		if ($('bp-to').value != 'HKT' && $('bp-from').value != 'PER')
			return false;
	
		var testDate = new Date(2009, 11, 14);
		var suppliedDate = new Date(y, m, d);
	
		if (suppliedDate < testDate) {
			return true;
		}
	
		return false;
	},

	/**
	 * Validates HKT flight start dates
	 */
	validateHKTStartDate: function (d, m, y)
	{
		// not HKT? break early.
		if ($('bp-to').value != 'HKT')
				return false;
	
		var testDate = new Date(2009, 11, 22);
		var suppliedDate = new Date(y, m, d);
	
		if (suppliedDate < testDate) {
			return true;
		}
	
		return false;
	},

	/**
	 * Validates JNB flight start dates
	 */
	validateJNBStartDate: function (d, m, y)
	{
		// not JNB? break early.
		if ($('bp-to').value != 'JNB' && $('bp-from').value != 'JNB')
				return false;
	
		var testDate = new Date(2010, 3, 13);	
		var suppliedDate = new Date(y, m, d);
	
		if (suppliedDate < testDate) {
			return true;
		}
	
		return false;
	},

	/**
	 * Enforces one way from NZ to HKT
	 */
	validateNZHKTNoReturn: function ()
	{

		if ($('bp-to').value != 'HKT')
		{
				return false;
		}

		
		// if one way and:
		// NZ is the originating country
		if ($('bp-to').value == 'HKT' && bp_cities[$('bp-from').value].country == 'NZ' && !$('bp-round').checked)
		{
			return false;
		}
		
		return false;
  },

	/**
	 * Enforces one way from NZ to LHR
	 */
	validateLHRNoReturn: function ()
	{
		if ($('bp-to').value != 'LHR')
		{
			return false;
		}

		// if one way and:
		// LHR is the destination port
		if ($('bp-to').value == 'LHR' && !$('bp-round').checked)
		{
			return true;
		}

		return false;
	},

	/**
	 * Validates passenger numbers
	 */
	validatePax: function ()
	{
		a = Number($('bp-pax-adult').value);
		c = Number($('bp-pax-child').value);
		i = Number($('bp-pax-infant').value);
		
		// check the maximum amount of passengers
		pax_total = a + c + i;
		tmp = (pax_total > bp_prefs[bp_engine].maxPax) ? true : false;
		this._error_box.evalError(tmp, 'maxpax');
		
		// check there aren't more infants than adults
		tmp = (a < i) ? true : false;
		this._error_box.evalError(tmp, 'infants');
	},

	

	/**
	 * Amadeus specific forms fields creation
	 */
	createVAForm: function ()
	{
		engine 	 = 'va';

		var origin = $('bp-from').value;
		var destination = $('bp-to').value;

		if ( bp_cities[origin]['country'].match(/^(nz|us|za)$/i) ) {
			bp_country_of_residence = bp_cities[origin]['country'].toLowerCase();
		}
		else {
			// any other countries get no special treatment / variable settings
			bp_country_of_residence = "au";
		}

		// determine which URL to post to
		if (this._filter_search) {
			form_url = '/apps/vaustralia/flightsearch/find_flights.php';
		}
		else {
			form_url = 'http://book.vaustralia.com.au/pl/VAustralia/wds/Override.action';

			if (typeof(bp_country_of_residence) != 'undefined') {
				if ((bp_country_of_residence == 'us') || (bp_country_of_residence == 'za')) {
					form_url = 'http://book.vaustralia.com/pl/VAustralia/wds/Override.action';
				} else if (bp_country_of_residence == 'nz') {
					form_url = 'http://book.vaustralia.com/pl/VAustralia/wds/Override.action';
				}
			}
			//testing
			//form_url='/bookings/book-a-flight/';
		}

		if ($('bp-hidden-'+engine)) {
			$('bp-hidden-'+engine).remove();
		}
		
		this.createHiddenForm('bp-hidden-'+engine, 'bp-hidden-'+engine, form_url, $('bp-hidden'));
	
		this.createHiddenField('B_DATE_1', 'bp-date-1-'+engine, $('bp-month-depart').value + $('bp-day-depart').value + '0000');
	
		this.createHiddenField('B_LOCATION_1', 'bp-to-'+engine, $('bp-from').value);
		this.createHiddenField('E_LOCATION_1', 'bp-from-'+engine, $('bp-to').value);
	
		if ($('bp-round').checked) {
			//this.createHiddenField('B_LOCATION_2', 'bp-to-round-'+engine, $('bp-to').value);
			//this.createHiddenField('E_LOCATION_2', 'bp-from-round-'+engine, $('bp-from').value);
			this.createHiddenField('B_DATE_2', 'bp-date-2-'+engine, $('bp-month-return').value + $('bp-day-return').value + '0000');
			this.createHiddenField('TRIP_TYPE', 'bp-triptype-'+engine, 'R');
		} else {
			this.createHiddenField('TRIP_TYPE', 'bp-triptype-'+engine, 'O');
		}
		if ($('bp-date-flex')) {
			if ($('bp-date-flex').checked) {
				this.createHiddenField('DATE_RANGE_QUALIFIER_1', 'bp-date-range-'+engine, 'C');
				this.createHiddenField('DATE_RANGE_VALUE_1', 'bp-date-range-value-'+engine, '3');
			}
		}
		// new fields rec'd from amadeus
		this.createHiddenField('EMBEDDED_TRANSACTION', 'bp-embedded-transaction-'+engine, 'FlexPricerAvailability');
		this.createHiddenField('DISPLAY_TYPE', 'bp-display-type-'+engine, '2');
		this.createHiddenField('PRICING_TYPE', 'bp-pricing-type-'+engine, 'O');
		this.createHiddenField('SITE', 'bp-site-'+engine, 'CBAVCBAV');
		//this.createHiddenField('COMMERCIAL_FARE_FAMILY_1', 'bp-commercial-ff-'+engine, 'CFFPREM');
		this.createHiddenField('WDS_ARRANGE_BY', 'bp-arrange-by-'+engine, 'E');
		this.createHiddenField('WDS_HBX_ID_E', 'bp-hbx-id-'+engine, 'DM5707176LZS03EN3');
		this.createHiddenField('DATE_RANGE_QUALIFIER_1', 'bp-dr-qualifier-'+engine, 'C');
		this.createHiddenField('DATE_RANGE_VALUE_1', 'bp-dr-value-'+engine, '3');
		this.createHiddenField('DATE_RANGE_QUALIFIER_2', 'bp-dr-qualifie2-'+engine, 'C');
		this.createHiddenField('DATE_RANGE_VALUE_2', 'bp-dr-value2-'+engine, '3');
	
		if (typeof(bp_country_of_residence) != 'undefined') {
			this.createHiddenField('SO_SITE_COUNTRY_OF_RESIDENCE_BIS', 'bp-country-residence-bis-'+engine, bp_country_of_residence);
			this.createHiddenField('SO_SITE_COUNTRY_OF_RESIDENCE', 'bp-country-residence-'+engine, bp_country_of_residence);
		} else {
			this.createHiddenField('SO_SITE_COUNTRY_OF_RESIDENCE_BIS', 'bp-country-residence-bis-'+engine, 'AU');
			this.createHiddenField('SO_SITE_COUNTRY_OF_RESIDENCE', 'bp-country-residence-'+engine, 'AU');
		}
	
		if (typeof(bp_country_of_residence) != 'undefined') {
			if (bp_country_of_residence == 'us') {
				this.createHiddenField('SO_SITE_OFFICE_ID', 'bp-site-office-id-'+engine, 'LAXVA08AA');
				this.createHiddenField('SO_SITE_QUEUE_OFFICE_ID', 'bp-site-queue-office-id-'+engine, 'LAXVA08AA');
			} else if (bp_country_of_residence == 'nz') {
				this.createHiddenField('SO_SITE_OFFICE_ID', 'bp-site-office-id-'+engine, 'AKLVA08AA');
				this.createHiddenField('SO_SITE_QUEUE_OFFICE_ID', 'bp-site-queue-office-id-'+engine, 'AKLVA08AA');
			} else if (bp_country_of_residence == 'za') {
				this.createHiddenField('SO_SITE_OFFICE_ID', 'bp-site-office-id-'+engine, 'JNBVA08AA');
				this.createHiddenField('SO_SITE_QUEUE_OFFICE_ID', 'bp-site-queue-office-id-'+engine, 'JNBVA08AA');
			} else {
				this.createHiddenField('SO_SITE_OFFICE_ID', 'bp-site-office-id-'+engine, 'BNEVA08AA');
				this.createHiddenField('SO_SITE_QUEUE_OFFICE_ID', 'bp-site-queue-office-id-'+engine, 'BNEVA08AA');
			}
		} else {
			this.createHiddenField('SO_SITE_OFFICE_ID', 'bp-site-office-id-'+engine, 'BNEVA08AA');
			this.createHiddenField('SO_SITE_QUEUE_OFFICE_ID', 'bp-site-queue-office-id-'+engine, 'BNEVA08AA');
		}
		this.createHiddenField('SKIN', 'bp-skin-'+engine, 'VA');
		//this.createHiddenField('WDS_VA_FRONTEND_URL', 'bp-wds-va-frontendurl-'+engine, 'nceyadam.nce.amadeus.net');
		this.createHiddenField('LANGUAGE', 'bp-language-'+engine, 'GB');
		this.createHiddenField('BOOKING_FLOW', 'bp-flow-'+engine, 'FLEX_PRICER_ITINERARY');
		//this.createHiddenField('IsWDS', 'bp-iswds-'+engine, 'TRUE');
		this.createHiddenField('SO_SITE_FP_NB_RECO', 'bp-reco-'+engine, '400');
					this.createHiddenField('WDS_BOOKING_FLOW', 'bp-wds-booking-flow', 'REVENUE');	
		// these are only test server paramters
		//if (this._test_server) {
			//this.createHiddenField('SERVER', 'bp-server-'+engine, 'SITE ACCEPTANCE');
			//this.createHiddenField('BACKEND', 'bp-backend-'+engine, 'PRODUCTION');
			//this.createHiddenField('OVERRIDE_CC_PARAMS', 'bp-override-'+engine, 'Y');
	
			// SO_SITE_APIV2_SERVER_USER_ID differs depending on what the SO_SITE_CORPORATE_ID is set to
			var APIV2_SERVER_USER_ID = this.options.corporate_id.substring(0,3);

			this.createHiddenField('SO_SITE_APIV2_SERVER', 'bp-site-api-'+engine, '194.76.166.179');
			this.createHiddenField('SO_SITE_APIV2_SERVER_USER_ID', 'bp-site-api-id-'+engine, APIV2_SERVER_USER_ID);
			this.createHiddenField('SO_SITE_APIV2_SERVER_PWD', 'bp-site-api-pwd-'+engine, 'API2000');
			this.createHiddenField('SO_SITE_CORPORATE_ID', 'bp-site-corp-id-'+engine, this.options.corporate_id);
	
			this.createHiddenField('SO_SITE_MAX_AIR_DATE_SPAN', 'bp-site-max-air-'+engine, 'M12');
			this.createHiddenField('SO_SITE_MAXIMAL_TIME', 'bp-site-maximal-air-'+engine, 'M12');
			this.createHiddenField('SO_SITE_MIN_AVAIL_DATE_SPAN', 'bp-site-minimal-avail-'+engine, 'H3');
			this.createHiddenField('SO_SITE_MINIMAL_TIME', 'bp-site-minimal-time-'+engine, 'H3');
			this.createHiddenField('SO_SITE_CMP_DATE_IN_GMT', 'bp-site-date-gmt-'+engine, 'TRUE');
			this.createHiddenField('BANNER', 'bp-banner-test-'+engine, 'TEST');
	
		//}
	
		var bp_temp_travel_class = $('bp-travelclass').value;
	
		if (typeof(bp_country_of_residence) != 'undefined') {
			if (bp_country_of_residence == 'nz') {
				bp_temp_travel_class = bp_temp_travel_class + 'NZ';
			}
			if (bp_country_of_residence == 'za') {
				bp_temp_travel_class = bp_temp_travel_class + 'ZA';
			}
		}
	
		switch ($('bp-travelclass').value) {
			case 'CFFLITE':
			case 'CFFECO':
			case 'CFFPREM':
			case 'CFFBUS':
				this.createHiddenField('COMMERCIAL_FARE_FAMILY_1', 'bp-commercial-ff-1-'+engine, bp_temp_travel_class);
				break;
			default:	// nothing is written if the value is invalid
				break;
		}
	
		//alert('country: '+bp_country_of_residence+' fare: '+bp_temp_travel_class);
	
		// get amount of pax
		a = Number($('bp-pax-adult').value);
		c = Number($('bp-pax-child').value);
		i = Number($('bp-pax-infant').value);
	
		for (x = 1; x <= a; x++) {	this.createHiddenField('TRAVELLER_TYPE_'+x, 'bp-travel-type-'+x+'-'+engine, 'ADT') }
		for (x = 1; x <= c; x++) {	this.createHiddenField('TRAVELLER_TYPE_'+(x+a), 'bp-travel-type-'+(x+a)+'-'+engine, 'CHD'); }
		if (i) {
			for (x = 1; x <= i; x++) { this.createHiddenField('HAS_INFANT_'+x, 'bp-has-infant-'+x+'-'+engine, 'TRUE'); }
		} else {
			this.createHiddenField('HAS_INFANT_1', 'bp-has-infant-'+engine, 'FALSE');
		}
	
		this.createHiddenField('SO_QUEUE_NUMBER', 'bp-site-queue-no-'+engine, '8');
		this.createHiddenField('SO_QUEUE_CATEGORY', 'bp-site-queue-cat-'+engine, '99');
	},
	
	/**
	 * Creates and appends a hidden form field
	 */
	createHiddenField: function (name, id, value)
	{
		append_elem = this.hiddenFormElem;
		
		if (!$(id)) {
			o = document.createElement('input');
			o.type = 'hidden';
			o.name = name;
			if (id)
				o.id = id;
	
			o.value = value;
			append_elem.appendChild(o);
		} else {
			$(id).value = value;
		}
	},
	
	
	/**
	 * Creates and appends a hidden form field
	 */
	createHiddenForm: function (name, id, action, append_elem)
	{
		if (!$(id))
		{
			f = document.createElement('form');
			f.method = 'post';
			f.id = id;
			f.name = name;
			f.action = action;
			append_elem.appendChild(f);
		}
		this.hiddenFormElem = $(id);
		return this.hiddenFormElem;
	},
	
	
	/**
	 * Executes the form creation function for the current bp engine
	 */
	generateHiddenForm: function ()
	{
		// depending on the engine run the correct form generator
		if (bp_engine == 'va')
		{
			this.createVAForm();
		}
	},

	/**
	 * Submits the form
	 */
	submit: function ()
	{
		this.setOriginCookie();
		var hasPopup = false;
		
		// find the current hidden form
		form = $('bp-hidden-'+bp_engine);
		//alert(form.COMMERCIAL_FARE_FAMILY_1.value);
		if (bp_engine == 'va') {
			if (typeof(Popup) != 'undefined') {
				this._popup = new Popup({ 
					url 		: '/apps/booking_panel/please_hold.php', 
					name 		: 'amadeus', 
					resizable 	: 1, 
					scrollbars 	: 1,
					width 		: '100%', 
					height 		: '100%' 
				});
				this._popup.launch();
				form.setAttribute('target', 'amadeus');
			}
		}
		else if (typeof(newskiesValidation) != 'undefined') {
			// new skies cutover - travel on the cutover day requires a popup informing of potential delays.
			var departDateString = '' + $('bp-month-depart').value + $('bp-day-depart').value;
			var arriveDateString = '' + $('bp-month-return').value + $('bp-day-return').value;

			var newskies = new newskiesValidation( Number(departDateString), Number(arriveDateString) );
			hasPopup = newskies.checkForPopup();
		}

		if (this.debugVars)
		{
			form.setAttribute('action', '/apps/booking_panel/print_post_vars.php');
		}

		// submit the flight panel form
		if (form)
		{
			// check if the guest has closed the popup without clicking the link to proceed.
			if (hasPopup) {
				var timeout = function () {
					if (newskies.newskiesMessagePanel.overlayDiv) {
						window.setTimeout(timeout, 2000);
					}
					else {
						form.submit();
					}
				};
				window.setTimeout(timeout, 4000);
			}
			else {
				form.submit();
			}
		}

		// close the amadeus message overlay
		// and redirect to Vaustralia website
		if (bp_site == 'vb' && bp_engine == 'va')
		{
			this.closeVaustMessage();
			window.location = "http://www.vaustralia.com.au/?from1="+$('bp-from').value+"&to1="+$('bp-to').value
		}
	}
});


/*Scripts for skysales*/

	/*
	Determines whether to send request to skylights or skysales, and
	then sends request.
	*/
function FindFlights() {

	// validate depart date
	var departDay1Index = $('bp-day-depart').selectedIndex;
	var departMonth1Index = $('bp-month-depart').selectedIndex;

	// validate return date
	var isOneWay = $("bp-oneway").checked;
	var departDay2Index = $('bp-day-return').selectedIndex;
	var departMonth2Index = $('bp-month-return').selectedIndex;

	// Set months in correct format for posting
	$('departMonth1').value = FixMonthYear($('bp-month-depart').value);
	$('departMonth2').value = FixMonthYear($('bp-month-return').value);
	
	// Fill the new skies variable here
	if (isOneWay) {
		var tripType = "OneWay";
	} else {
		var tripType = "RoundTrip";
	}


	var origin1 = $('bp-from').value;
	var day1 = $('bp-day-depart').value;
	
	var month1Raw = $('bp-month-depart').value;
	var month1 = month1Raw.substring(0, 4) + "-" + month1Raw.substring(4);
	
	var destination1 = $('bp-to').value;
	var origin2 = "";
	var day2 = $('bp-day-return').value;
	var month2Raw = $('bp-month-return').value;
	var month2 = month2Raw.substring(0, 4) + "-" + month2Raw.substring(4);
	var destination2 = "";
	var origin3 = "";
	var day3 = "";
	var month3 = "";
	var destination3 = "";
	var adultNum = $('bp-pax-adult').value;
	var childNum = $('bp-pax-child').value;
	var infantNum = $('bp-pax-infant').value;
	var currencyCode = $('currency').value;
	var fareTypes = "I";
	// var searchBy = "columnView";
	var date_picker = "";
	var urlInArray = document.URL.split("/");
	var cultureVal = "en-AU";

	// PB: added to cover combined Melbourne airport search
	var useMacOrigin1 = "";
	var useMacDestination1 = "";

	if ( $("searchTypeFlexible") && $("searchTypeFlexible").checked ) {
		var searchType = $("searchTypeFlexible").value;
	}
	else if($("searchTypeMustTravel")) {
		var searchType = $("searchTypeMustTravel").value;
	}
	else {
		var searchType = "columnView";
	}
	
	returnButton = document.getElementById("return");
	divNode = returnButton.parentNode.parentNode.parentNode;
	fieldNode = divNode.parentNode;
	formNode = fieldNode.parentNode;

	formNode.setAttribute("action", "http://book.virginblue.com.au/Search.aspx");

	addSkysalesInput("pageToken", "sLkmnwXwAsY=", formNode);
	addSkysalesInput("culture", cultureVal, formNode);
	addSkysalesInput("__VIEWSTATE", "/wEPDwUBMGQYAQUeX19Db250cm9sc1JlcXVpcmVQb3N0QmFja0tleV9fFgEFL1N0YXRpY0Rpc3BsYXlXZWxjb21lU2VhcmNoVmlldyRDaGVja0JveFByb21vT3B01vbgRxrRoI5cv2RyiNuBSO4wESc=", formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$RadioButtonMarketStructure", tripType, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$TextBoxMarketOrigin1", origin1, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListMarketDay1", day1, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListMarketMonth1", month1, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$TextBoxMarketDestination1", destination1, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$TextBoxMarketOrigin2", origin2, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListMarketDay2", day2, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListMarketMonth2", month2, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$TextBoxMarketDestination2",destination2, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListSearchBy", searchType, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListPassengerType_ADT",adultNum, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListPassengerType_CHD",childNum, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListPassengerType_INFANT",infantNum, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListCurrency",currencyCode, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$DropDownListFareTypes",fareTypes, formNode);
	addSkysalesInput("ControlGroupSearchMainView$ButtonSubmit", "", formNode);
	addSkysalesInput("date_picker", date_picker, formNode);
	addSkysalesInput("ControlGroupSearchMainView$AvailabilitySearchInputSearchMainView$fromCS", "yes", formNode);
		
	formNode.submit();
}

function addSkysalesInput(name, value, form)
{
	if(document.getElementsByName(name)[0]==undefined) {
		input = document.createElement('input');
		input.setAttribute("type", "hidden");
		input.name = name;
		input.value = value;
		form.appendChild(input);
	} else {
		document.getElementsByName(name)[0].value = value
	}
}

/*
Converts MMYYYY to YYYYMM for Skysales date format
*/
function FixMonthYear(str, carrier) {
	var m = str.substring(4);
	var y = str.substring(0, 4);
	return y + '-' + m;
}