// JavaScript Document
// Från dateutil.js

	// adding x days to specified def date
  function addDefDays(myDate, days) {
    //TL 2004-10-05
    // Adding one extra hour to the time if its VinterTime
    var testDate = new Date(myDate.getTime() + days*24*60*60*1000);

    currentTimeZoneOffsetInHours = testDate.getTimezoneOffset()/60

    if(currentTimeZoneOffsetInHours == "-2"){
      ExtraTime = 0;
    }else{
      ExtraTime = 60*60*1000;
    }

    return new Date(myDate.getTime() + (days*24*60*60*1000) + ExtraTime );
  }

	function list_days_with_def(dateNow, DaysAdd) {
		var date = new Date(dateNow[0], parseInt(dateNow[1]) - 1, (DaysAdd ? parseInt(dateNow[2]) + DaysAdd : dateNow[2]));
		var day = date.getDate();

		for (i = 1; i <= 31; i++) {
			document.write("<option value='" + i + "' " + (date.getDate() == parseInt(i) ? "selected" : "") + ">" + i + "</option>");
		}
	}

  function list_months_with_def(dateNow, DaysAdd) {
    var option;
    var selDate;
    var date = new Date(dateNow[0], parseInt(dateNow[1]) - 1, parseInt(dateNow[2]));

    if (DaysAdd > 0) {
      selDate = new Date(addDefDays(date, DaysAdd));
    }
    else {
      selDate = new Date(dateNow[0], parseInt(dateNow[1]) - 1, parseInt(dateNow[2]));
    }

    var Year = date.getFullYear();
    var Month = date.getMonth();
    var selYear = selDate.getYear();
    var selMonth = selDate.getMonth() + 1;

    if (Year < 1900) { Year += 1900 };

    for (m = (Month+1); m <= (Month + 13); m++) {
      if (m % 13 == 0) {
        Year++;
      }
      else {
        if ((selYear == Year) && ( (selMonth == m) || (selMonth+13 == m) )) {
          option = "<option value='" + Year + "-" + (m % 13) + "' selected>" + Months[m % 13] + " " + Year + "</option>";
        }
        else {
          option = "<option value='" + Year + "-" + (m % 13) + "'>" + Months[m % 13] + " " + Year + "</option>";
        }

        document.write(option);
      }
    }

  }

//***************************************************************
// Från util.js

	// adding x days to specified date
	function addDays(myDate, days) {
		 return new Date(myDate.getTime()-7 + days*24*60*60*1000);
	}

  function compareDates(date1, date2) {
    var valid = true;

    var d1;
    var d2;

    d1 = date1.split('-');
    d2 = date2.split('-');

			  var checkDate1 = new Date(d1[0], Number(d1[1])-1, d1[2]);
    var checkDate2 = new Date(d2[0], Number(d2[1])-1, d2[2]);

    if (checkDate1 > checkDate2) {
      valid = false;
    }

    return valid;
  }

//****************************************************************
// Från calendar.js

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;
	}

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;
	}

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();
	}

// ------------------------------------------------------------------
// 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;
	}

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}


//*****************************************************************

/* All below is for configuring calendar, generating/handling dates sent
     back and forth etc */
  var validationMsg;
//	var formSubmitted = false;


  var now = new Date();
 	now.setFullYear(now.getFullYear());
 	now.setMonth(now.getMonth());
	now.setDate(now.getDate());
	now = addDefDays(now, 2);

  var dateNow = new Array();
  var Today = now.getFullYear() + "-" + (now.getMonth() + 1) + "-" + now.getDate();
  var dateNow = Today.split("-");

  var Months = new Array("", "Jan", "Feb", "Mar", "Apr", "Maj", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec");

function check_date(field){
  var DateValue = field;
  var seperator = ".";
  var year;
  var month;
  var day;
  var leap = 0;
  var err = 0;
  var i;
   err = 0;
   newVal = DateValue.split("-");
   year = newVal[0];
   month = newVal[1];
   day = newVal[2];

   /* year is wrong if year = 0000 */
   if (year == 0) {
      err = 20;
   }
   /* Validation of month*/
   if ((month < 1) || (month > 12)) {
      err = 21;
   }
   /* Validation of day*/
   if (day < 1) {
     err = 22;
   }
   /* Validation leap-year / february / day */
   if ((year % 4 == 0) || (year % 100 == 0) || (year % 400 == 0)) {
      leap = 1;
   }
   if ((month == 2) && (leap == 1) && (day > 29)) {
      err = 23;
   }
   if ((month == 2) && (leap != 1) && (day > 28)) {
      err = 24;
   }
   /* Validation of other months */
   if ((day > 31) && ((month == "1") || (month == "3") || (month == "5") || (month == "7") || (month == "8") || (month == "10") || (month == "12"))) {
      err = 25;
   }
   if ((day > 30) && ((month == "4") || (month == "6") || (month == "9") || (month == "11"))) {
      err = 26;
   }
   /* if 00 ist entered, no error, deleting the entry */
   if ((day == 0) && (month == 0) && (year == 00)) {
      err = 0; day = ""; month = ""; year = ""; seperator = "";
   }
   /* if no error, write the completed date to Input-Field (e.g. 13.12.2001) */
   if (err == 0) {
	 return 1;
   }
   /* Error-message if err != 0 */
   else {
//      alert("Date is incorrect!");
	 return 0;
   }
  }


	// changes return date if departure date is ahead/after return
	function changeReturnDate(depYearMonth, depDay, retYearMonth, retDay) {
		// Is it a valid date?
		OKdate = check_date(depYearMonth.value+"-"+depDay.value)
		if(OKdate){
			// combining the 2 select strings into 1
			var depComb = depYearMonth.value + '-' + depDay.value;
			var retComb = retYearMonth.value + '-' + retDay.value;

			var comp = compareDates(depComb ,"yyyy-M-d", retComb, "yyyy-M-d");

			// retDate is greater than depDate 'cause user
			// didn't choose correctly, change retDate values
			if (comp == '1') {
				var date = parseDate(depComb);
				var newRetDate = addDays(date, 7);
				var formYearMonth = formatDate(newRetDate, "yyyy-M");
				var formDay = formatDate(newRetDate, "d");

				retYearMonth.value = formYearMonth;
				retDay.value = formDay;
			}
		}
	}

  function checkDest_631919() {
   var valid = true;

    if (document.flightForm_Photocontest.td_txtToCity.value.length < 3) {
      valid = false;
      validationMsg = "Du måste ange minst 2 tecken i destinationen!";
    }  else if (document.flightForm_Photocontest.td_txtToCity.value == "Skriv resmål"){
      valid = false;
      validationMsg = "Du måste ange en destination!";
		}

    return valid;
  }


// setting correct date to form for our servlet
function setCorrectParametersToForm_Photocontest() {
	var validEntry = true;
	var msgShown = false;

	if (validEntry) {
		validEntry = checkDest_631919();
	}else if (validEntry == false && msgShown == false) {
		msgShown = true;
		alert(validationMsg);
	}

	// Is it a valid date?
	OKdateDep = check_date(document.flightForm_Photocontest.td_depCal_year.value+"-"+document.flightForm_Photocontest.td_txtDepDay.value);
	OKdateRet = check_date(document.flightForm_Photocontest.td_retCal_year.value+"-"+document.flightForm_Photocontest.td_txtRetDay.value);

	// Valid date
	if(OKdateDep && OKdateRet){
		if (validEntry) {
			var comDepYearMonth = document.flightForm_Photocontest.td_depCal_year.value;
			var comRetYearMonth = document.flightForm_Photocontest.td_retCal_year.value;

			var depArr = comDepYearMonth.split("-");
			var retArr = comRetYearMonth.split("-");

			validEntry = compareDates(dateNow[0] + "-" + dateNow[1] + "-" + dateNow[2], depArr[0] + "-" + depArr[1] + "-" + document.flightForm_Photocontest.td_txtDepDay.value);

			if (validEntry) {
				validEntry = compareDates(dateNow[0] + "-" + dateNow[1] + "-" + dateNow[2], retArr[0] + "-" + retArr[1] + "-" + document.flightForm_Photocontest.td_txtRetDay.value);
			}else if (validEntry == false && msgShown == false) {
				msgShown = true;
				alert("Du har valt ett för tidigt avresedatum. Tidigaste avresedatum är: " + dateNow[0] + "-" + dateNow[1] + "-" + dateNow[2]);
			}

			if (validEntry) {
				validEntry = compareDates(depArr[0] + "-" + depArr[1] + "-" + document.flightForm_Photocontest.td_txtDepDay.value, retArr[0] + "-" + retArr[1] + "-" + document.flightForm_Photocontest.td_txtRetDay.value);
			}else if (validEntry == false && msgShown == false) {
				msgShown = true;
				alert("Du har valt ett för tidigt hemresedatum. Tidigaste hemresedatum är: " + dateNow[0] + "-" + dateNow[1] + "-" + dateNow[2]);
			}

			if (validEntry) {
				//Months[m % 13] + String(Year).substring(2)
				var tmpDepMonth = Months[depArr[1]];
				var tmpRetMonth = Months[retArr[1]];
				if (tmpDepMonth.indexOf("Okt") == 0) tmpDepMonth = "Oct";
				if (tmpDepMonth.indexOf("Maj") == 0) tmpDepMonth = "May";
				if (tmpRetMonth.indexOf("Okt") == 0) tmpRetMonth = "Oct";
				if (tmpRetMonth.indexOf("Maj") == 0) tmpRetMonth = "May";

				document.flightForm_Photocontest.td_txtDepMonth.value =tmpDepMonth  + depArr[0].substring(2);
				document.flightForm_Photocontest.td_txtRetMonth.value = tmpRetMonth + retArr[0].substring(2);

//      document.flightForm_Photocontest.submit();

			}else if (validEntry == false && msgShown == false) {
				alert("Du har angivit ett hemresedatum som inträffar före avresedatumet.");
				validEntry = false;
			}
		}else if (msgShown == false) {
			alert(validationMsg);
			validEntry = false;
		}
	// NOT a valid date
	}else{
		var datumErr = "";
		if(!OKdateDep){

			datumErr += "Du har angivit ett ogiltigt Utresedatum.";
		}else if(!OKdateRet){
			datumErr += "Du har angivit ett ogiltigt Hemresedatum.";
		}
		alert(datumErr);
		validEntry = false;
	}
	return validEntry;
}