// Contains the necessary JavaScript functions to operate the CABS website

/*
    Functions used by Discovery pages
*/
//Swaps the Accom / Tours div
function ChangeIndustryGrouping( industry )
{
    var accomm = document.getElementById("divSearchBoxAccomm");
    var aet = document.getElementById("divSearchBoxAET");
    var groupingField = document.getElementById("categoryGrouping");

    if (groupingField != null) groupingField.value=industry;

    if (accomm != null && aet != null) {
	    if (industry == "aet" )
	    {
		    accomm.style.display = "none";
		    aet.style.display = "block";
	    }
	    else if ( industry == "accomm" )
	    {
		    aet.style.display = "none";
		    accomm.style.display = "block";
	    }
	}
}

// changes the view on the discovery results page
function ChangeIndustryGroupingResults (industry)
{
    var nights = document.getElementById("trNights");
    var classAccomm = document.getElementById("form_ddlClassificationAccom");
    var classAET = document.getElementById("form_ddlClassificationAET");
    var spanTypeOf = document.getElementById("spanTypeOf");

    if (nights != null && classAccomm != null && classAET != null) {
        if (industry == "aet") {
            nights.style.display = "none";
            classAccomm.style.display = "none";
            classAET.style.display = "block";
            spanTypeOf.firstChild.nodeValue = "Tour/Activity";
        }
        else if (industry == "accomm") {
            nights.style.display = "block";
            classAccomm.style.display = "block";
            classAET.style.display = "none";
            spanTypeOf.firstChild.nodeValue = "Accommodation";
        }
        
    }
}

var isMaximised = false;

function ChangeMinimiseMaximiseSearchCriteriaBox( )
{
	if ( isMaximised == false )
	{
		if ( navigator.appName == "Microsoft Internet Explorer" )
		{
			document.getElementById("search_form_box_table").style.display = "block";
		}
		else
		{
			document.getElementById("search_form_box_table").style.display = "table";
		}
		
		document.getElementById("search_form_box_search_icon").firstChild.nodeValue = "-";
		isMaximised = true;
	}
	else
	{
		document.getElementById("search_form_box_table").style.display = "none";
		document.getElementById("search_form_box_search_icon").firstChild.nodeValue = "+";
		isMaximised = false;
	}
}

/*
    Functions used by Booking Pages
*/

// determine if the browser supports the DOM
if (document.getElementById && document.createTextNode && document.createElement){
	isDOMCapable=true;
}

function showHideRoomConfigurations(control) {
	if (isDOMCapable && document.getElementById(control)) {
		var configurationsControl = document.getElementById(control); // get the control that selects how different configurations to support
		var selectedConfigurations = configurationsControl.options[configurationsControl.selectedIndex].value; // get its value
		
		var room1 = document.getElementById("search_form_multiple_configurations_1");
		var room2 = document.getElementById("search_form_multiple_configurations_2");
		var room3 = document.getElementById("search_form_multiple_configurations_3");

		if (selectedConfigurations == '1') {
			room1.style.display = "block";
			room2.style.display = "none";
			room3.style.display = "none";
		}

		if (selectedConfigurations == '2') {
			room1.style.display = "block";
			room2.style.display = "block";
			room3.style.display = "none";
		}

		if (selectedConfigurations == '3') {
			room1.style.display = "block";
			room2.style.display = "block";
			room3.style.display = "block";
		}
	}	
}

function isValidString (control, minimumLength, maximumLength, alertMessage, ignoreIfEmpty) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var value = formControl.value;

		if (value.length == 0 && ignoreIfEmpty != null && ignoreIfEmpty) 
			return true;

		if (value.length > maximumLength || value.length < minimumLength) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isValidNameString(control, minimumLength, maximumLength, alertMessage, ignoreIfEmpty) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var value = formControl.value;

		if (value.length == 0 && ignoreIfEmpty != null && ignoreIfEmpty) 
			return true;

		if (value.length > maximumLength || value.length < minimumLength) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}

		var regex = /^[a-zA-Z ]+$/;
		var result = regex.exec(value);

		if (!result) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isValidCheck (control) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);

		if (!formControl.checked) {
			return false;
		}
	}	
	return true;
}

function isValidSelect (control, alertMessage) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);

		if (formControl.selectedIndex == -1) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
		else {
			var value = formControl.options[formControl.selectedIndex].value;

			if (value.length == 0 || value == '-1' || value.substring(0, 1) == '-' || value.substring(0, 1) == '_') {
				if (alertMessage.length != 0) {
					alert(alertMessage);
				}
				return false;
			}
		}
	}	
	return true;
}

function isValidEmail (control, alertMessage, ignoreIfEmpty) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var value = formControl.value;

		if (value.length == 0 && ignoreIfEmpty != null && ignoreIfEmpty) 
			return true;
		
		var regex = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)\s*$/;
		var result = regex.exec(value);

		if (!result) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isValidRadio (formControl, alertMessage) {
	var result = false;
	
	if (formControl.length == null) {
		// if there is only one element then there is no array
		if (formControl.checked == true) {
			result = true;
		}
	}
	else {
		// there must be more than one element so we can loop through
		for (i=0;i<formControl.length;i++){
			if (formControl[i].checked == true)
				result = true;
		}
	}

	if (!result) {
		if (alertMessage.length != 0) {
			alert(alertMessage);
		}
		return false;
	}
	return true;
}

function isValidPhoneNumber(control, alertMessage, ignoreIfOthersEmpty, ignoreIfEmpty) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControlNumber = document.getElementById(control);
		var valueNumber = formControlNumber.value;

		if (valueNumber.length == 0 && ignoreIfEmpty != null && ignoreIfEmpty) 
			return true;

		var regexNumber = /^\+*[\d\s-]{4,}?$/;
		var resultNumber = regexNumber.exec(valueNumber);

		if (!resultNumber) {
			if (alertMessage.length != 0 && !(ignoreIfOthersEmpty && valueNumber.length == 0)) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isValidMobileNumber(control1, control2, alertMessage, ignoreIfOthersEmpty, ignoreIfEmpty) {
	if (isDOMCapable && document.getElementById(control1) && document.getElementById(control2)) {
		var formControlCountry = document.getElementById(control1);
		var formControlNumber = document.getElementById(control2);
		var valueCountry = formControlCountry.value;
		var valueNumber = formControlNumber.value;

		if (valueCountry.length == 0 && valueNumber.length == 0 && ignoreIfEmpty != null && ignoreIfEmpty) 
			return true;

		var regexCountry = /^\s*\d{1,3}\s*$/;
		var regexNumber = /^\s*[\s0-9]{6,}\s*$/;
		var resultCountry = regexCountry.exec(valueCountry);
		var resultNumber = regexNumber.exec(valueNumber);

		if (!resultCountry || !resultNumber) {
			if (alertMessage.length != 0 && !(ignoreIfOthersEmpty && (valueCountry.length == 0 || valueNumber.length == 0))) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isCreditCardNumberValid(control, alertMessage) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var cardNumber = formControl.value;
		var len = cardNumber.length;

		var regex = /^\d{13,16}$/;

		if (!regex.exec(cardNumber)) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}

		var no_digit = cardNumber.length;
		var oddoeven = no_digit & 1;
		var sum = 0;

		for (var count = 0; count < no_digit; count++) {
			var digit = Number(cardNumber.charAt(count));

			if (!((count & 1) ^ oddoeven)) {
				digit *= 2;
				if (digit > 9) {
					digit -= 9;
				}
			}

			sum += digit;
		}
		if (sum % 10 == 0) {
			return true;
		}
		else {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function isCreditCardTypeValid(control, desiredType, alertMessage) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var cardNumber = formControl.value;

		if (getCreditCardType(cardNumber) != desiredType) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
	}	
	return true;
}

function getCreditCardType(cardNumber) {
	regexVisa = /^4(\d{12}|\d{15})$/;
	regexMC = /^5[1-5]\d{14}$/;
	regexAmex = /^[3][4|7]\d{13}$/;
	regexDiners = /^[3][0][0-5]|[6|8]\d{11,12}$/;

	if (regexVisa.exec(cardNumber))
		return 'Visa';
	if (regexMC.exec(cardNumber))
		return 'Mastercard';
	if (regexAmex.exec(cardNumber))
		return 'AmericanExpress';
	if (regexDiners.exec(cardNumber))
		return 'Diners';
	
	return '';
}
	
function isCreditCardExpiryValid(control, alertMessage) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var cardExpiry = formControl.value;

		var regex = /^(0[1-9]|1[0-2])[01][0-9]$/;

		if (!regex.exec(cardExpiry)) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}
		
		var month = Number(cardExpiry.substr(0,2));
		var year = Number(cardExpiry.substr(2,2));
		var today = new Date();
		var currentYear = Number(String(today.getFullYear()).substr(2,2));
		
		if (!((currentYear < year) || (currentYear == year && today.getMonth()+1 <= month))) {
			if (alertMessage.length != 0) {
				alert(alertMessage);
			}
			return false;
		}

	}	
	return true;
}

function isCreditCardSecurityCodeValid(control, desiredType, alertMessage) {
	if (isDOMCapable && document.getElementById(control)) {
		var formControl = document.getElementById(control);
		var cardCode = formControl.value;

		var regex3Dig = /^\d{3}$/;
		var regex4Dig = /^\d{4}$/;

		if (desiredType == 'Visa' || desiredType == 'Mastercard') {
			if (!regex3Dig.exec(cardCode)) {
				if (alertMessage.length != 0) {
					alert(alertMessage);
				}
				return false;
			}
		}
		else if (desiredType == 'AmericanExpress') {
			if (!regex4Dig.exec(cardCode)) {
				if (alertMessage.length != 0) {
					alert(alertMessage);
				}
				return false;
			}
		}
	}	
	return true;
}

// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

// HISTORY
// ------------------------------------------------------------------
// May 17, 2003: Fixed bug in parseDate() for dates <1970
// March 11, 2003: Added parseDate() function
// March 11, 2003: Added "NNN" formatting option. Doesn't match up
//                 perfectly with SimpleDateFormat formats, but 
//                 backwards-compatability was required.

// ------------------------------------------------------------------
// These functions use the same 'format' strings as the 
// java.text.SimpleDateFormat class, with minor exceptions.
// The format string consists of the following abbreviations:
// 
// Field        | Full Form          | Short Form
// -------------+--------------------+-----------------------
// Year         | yyyy (4 digits)    | yy (2 digits), y (2 or 4 digits)
// Month        | MMM (name or abbr.)| MM (2 digits), M (1 or 2 digits)
//              | NNN (abbr.)        |
// Day of Month | dd (2 digits)      | d (1 or 2 digits)
// Day of Week  | EE (name)          | E (abbr)
// Hour (1-12)  | hh (2 digits)      | h (1 or 2 digits)
// Hour (0-23)  | HH (2 digits)      | H (1 or 2 digits)
// Hour (0-11)  | KK (2 digits)      | K (1 or 2 digits)
// Hour (1-24)  | kk (2 digits)      | k (1 or 2 digits)
// Minute       | mm (2 digits)      | m (1 or 2 digits)
// Second       | ss (2 digits)      | s (1 or 2 digits)
// AM/PM        | a                  |
//
// NOTE THE DIFFERENCE BETWEEN MM and mm! Month=MM, not mm!
// Examples:
//  "MMM d, y" matches: January 01, 2000
//                      Dec 1, 1900
//                      Nov 20, 00
//  "M/d/yy"   matches: 01/20/00
//                      9/2/00
//  "MMM dd, yyyy hh:mm:ssa" matches: "January 01, 2000 12:30:45AM"
// ------------------------------------------------------------------

var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat');
function LZ(x) {return(x<0||x>9?"":"0")+x}

// ------------------------------------------------------------------
// isDate ( date_string, format_string )
// Returns true if date string matches format of format string and
// is a valid date. Else returns false.
// It is recommended that you trim whitespace around the value before
// passing it to this function, as whitespace is NOT ignored!
// ------------------------------------------------------------------
function isDate(val,format) {
	var date=getDateFromFormat(val,format);
	if (date==0) { return false; }
	return true;
	}

// -------------------------------------------------------------------
// compareDates(date1,date1format,date2,date2format)
//   Compare two date strings to see which is greater.
//   Returns:
//   1 if date1 is greater than date2
//   0 if date2 is greater than date1 of if they are the same
//  -1 if either of the dates is in an invalid format
// -------------------------------------------------------------------
function compareDates(date1,dateformat1,date2,dateformat2) {
	var d1=getDateFromFormat(date1,dateformat1);
	var d2=getDateFromFormat(date2,dateformat2);
	if (d1==0 || d2==0) {
		return -1;
		}
	else if (d1 > d2) {
		return 1;
		}
	return 0;
	}

// ------------------------------------------------------------------
// formatDate (date_object, format)
// Returns a date in the output format specified.
// The format string uses the same abbreviations as in getDateFromFormat()
// ------------------------------------------------------------------
function formatDate(date,format) {
	format=format+"";
	var result="";
	var i_format=0;
	var c="";
	var token="";
	var y=date.getYear()+"";
	var M=date.getMonth()+1;
	var d=date.getDate();
	var E=date.getDay();
	var H=date.getHours();
	var m=date.getMinutes();
	var s=date.getSeconds();
	var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k;
	// Convert real date parts into formatted versions
	var value=new Object();
	if (y.length < 4) {y=""+(y-0+1900);}
	value["y"]=""+y;
	value["yyyy"]=y;
	value["yy"]=y.substring(2,4);
	value["M"]=M;
	value["MM"]=LZ(M);
	value["MMM"]=MONTH_NAMES[M-1];
	value["NNN"]=MONTH_NAMES[M+11];
	value["d"]=d;
	value["dd"]=LZ(d);
	value["E"]=DAY_NAMES[E+7];
	value["EE"]=DAY_NAMES[E];
	value["H"]=H;
	value["HH"]=LZ(H);
	if (H==0){value["h"]=12;}
	else if (H>12){value["h"]=H-12;}
	else {value["h"]=H;}
	value["hh"]=LZ(value["h"]);
	if (H>11){value["K"]=H-12;} else {value["K"]=H;}
	value["k"]=H+1;
	value["KK"]=LZ(value["K"]);
	value["kk"]=LZ(value["k"]);
	if (H > 11) { value["a"]="PM"; }
	else { value["a"]="AM"; }
	value["m"]=m;
	value["mm"]=LZ(m);
	value["s"]=s;
	value["ss"]=LZ(s);
	while (i_format < format.length) {
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		if (value[token] != null) { result=result + value[token]; }
		else { result=result + token; }
		}
	return result;
	}
	
// ------------------------------------------------------------------
// Utility functions for parsing in getDateFromFormat()
// ------------------------------------------------------------------
function _isInteger(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
function _getInt(str,i,minlength,maxlength) {
	for (var x=maxlength; x>=minlength; x--) {
		var token=str.substring(i,i+x);
		if (token.length < minlength) { return null; }
		if (_isInteger(token)) { return token; }
		}
	return null;
	}
	
// ------------------------------------------------------------------
// getDateFromFormat( date_string , format_string )
//
// This function takes a date string and a format string. It matches
// If the date string matches the format string, it returns the 
// getTime() of the date. If it does not match, it returns 0.
// ------------------------------------------------------------------
function getDateFromFormat(val,format) {
	val=val+"";
	format=format+"";
	var i_val=0;
	var i_format=0;
	var c="";
	var token="";
	var token2="";
	var x,y;
	var now=new Date();
	var year=now.getYear();
	var month=now.getMonth()+1;
	var date=1;
	var hh=now.getHours();
	var mm=now.getMinutes();
	var ss=now.getSeconds();
	var ampm="";
	
	while (i_format < format.length) {
		// Get next token from format string
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		// Extract contents of value based on format token
		if (token=="yyyy" || token=="yy" || token=="y") {
			if (token=="yyyy") { x=4;y=4; }
			if (token=="yy")   { x=2;y=2; }
			if (token=="y")    { x=2;y=4; }
			year=_getInt(val,i_val,x,y);
			if (year==null) { return 0; }
			i_val += year.length;
			if (year.length==2) {
				if (year > 70) { year=1900+(year-0); }
				else { year=2000+(year-0); }
				}
			}
		else if (token=="MMM"||token=="NNN"){
			month=0;
			for (var i=0; i<MONTH_NAMES.length; i++) {
				var month_name=MONTH_NAMES[i];
				if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
					if (token=="MMM"||(token=="NNN"&&i>11)) {
						month=i+1;
						if (month>12) { month -= 12; }
						i_val += month_name.length;
						break;
						}
					}
				}
			if ((month < 1)||(month>12)){return 0;}
			}
		else if (token=="EE"||token=="E"){
			for (var i=0; i<DAY_NAMES.length; i++) {
				var day_name=DAY_NAMES[i];
				if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
					i_val += day_name.length;
					break;
					}
				}
			}
		else if (token=="MM"||token=="M") {
			month=_getInt(val,i_val,token.length,2);
			if(month==null||(month<1)||(month>12)){return 0;}
			i_val+=month.length;}
		else if (token=="dd"||token=="d") {
			date=_getInt(val,i_val,token.length,2);
			if(date==null||(date<1)||(date>31)){return 0;}
			i_val+=date.length;}
		else if (token=="hh"||token=="h") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>12)){return 0;}
			i_val+=hh.length;}
		else if (token=="HH"||token=="H") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>23)){return 0;}
			i_val+=hh.length;}
		else if (token=="KK"||token=="K") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>11)){return 0;}
			i_val+=hh.length;}
		else if (token=="kk"||token=="k") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>24)){return 0;}
			i_val+=hh.length;hh--;}
		else if (token=="mm"||token=="m") {
			mm=_getInt(val,i_val,token.length,2);
			if(mm==null||(mm<0)||(mm>59)){return 0;}
			i_val+=mm.length;}
		else if (token=="ss"||token=="s") {
			ss=_getInt(val,i_val,token.length,2);
			if(ss==null||(ss<0)||(ss>59)){return 0;}
			i_val+=ss.length;}
		else if (token=="a") {
			if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";}
			else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";}
			else {return 0;}
			i_val+=2;}
		else {
			if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
			else {i_val+=token.length;}
			}
		}
	// If there are any trailing characters left in the value, it doesn't match
	if (i_val != val.length) { return 0; }
	// Is date valid for month?
	if (month==2) {
		// Check for leap year
		if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
			if (date > 29){ return 0; }
			}
		else { if (date > 28) { return 0; } }
		}
	if ((month==4)||(month==6)||(month==9)||(month==11)) {
		if (date > 30) { return 0; }
		}
	// Correct hours value
	if (hh<12 && ampm=="PM") { hh=hh-0+12; }
	else if (hh>11 && ampm=="AM") { hh-=12; }
	var newdate=new Date(year,month-1,date,hh,mm,ss);
	return newdate.getTime();
	}

// ------------------------------------------------------------------
// parseDate( date_string [, prefer_euro_format] )
//
// This function takes a date string and tries to match it to a
// number of possible date formats to get the value. It will try to
// match against the following international formats, in this order:
// y-M-d   MMM d, y   MMM d,y   y-MMM-d   d-MMM-y  MMM d
// M/d/y   M-d-y      M.d.y     MMM-d     M/d      M-d
// d/M/y   d-M-y      d.M.y     d-MMM     d/M      d-M
// A second argument may be passed to instruct the method to search
// for formats like d/M/y (european format) before M/d/y (American).
// Returns a Date object or null if no patterns match.
// ------------------------------------------------------------------
function parseDate(val) {
	var preferEuro=(arguments.length==2)?arguments[1]:false;
	generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d');
	monthFirst=new Array('M/d/y','M-d-y','M.d.y','MMM-d','M/d','M-d');
	dateFirst =new Array('d/M/y','d-M-y','d.M.y','d-MMM','d/M','d-M');
	var checkList=new Array('generalFormats',preferEuro?'dateFirst':'monthFirst',preferEuro?'monthFirst':'dateFirst');
	var d=null;
	for (var i=0; i<checkList.length; i++) {
		var l=window[checkList[i]];
		for (var j=0; j<l.length; j++) {
			d=getDateFromFormat(val,l[j]);
			if (d!=0) { return new Date(d); }
			}
		}
	return null;
	}