var PanelOne = null; var PanelTwo = null;
if (PanelOne == null) {
    PanelOne = document.getElementById("PanelOneTBL")
}
if (PanelTwo == null) {
    PanelTwo = document.getElementById("PanelTwoTBL")
}

function focusObj(a) {
    if (a.value == a.getAttribute("defValue")) {
        a.value = "";
    }
}

function blurObj(a) {
    if (a.value == "") {
        a.value = a.getAttribute("defValue");
    }
}

function highlight_tocity() {

    if (document.getElementById("toCity").value == "Airport or City") {
        document.getElementById("toCity").style.border = "1px dotted #19ACE2";
        document.getElementById("toCity").value = ""; 
        } 
}

function highlight_fromCity() {

    if (document.getElementById("fromCity").value == "Airport or City") {
        document.getElementById("fromCity").style.border = "1px dotted #19ACE2";
        document.getElementById("fromCity").value = "";
    }
}

function chSearchType(a) {
    debugger;
    switch (a) {

        case "RoundTrip":
//            $("#newdiv").contents().remove();
            $('#newdiv').load('include/roundtrip.html');
//            document.getElementById("ReturnFlightTR3").style.display = "block";
//            document.getElementById("ReturnFlightTR4").style.display = "block";
//            document.getElementById("booking_engine_center").style.background = "transparent url(images/engine_part2_bgd.png)  no-repeat ";
//            document.getElementById("booking_engine_center").style.height = "380px";
            break;
        case "OneWay":
//            $("#newdiv").contents().remove();
            $('#newdiv').load('include/roundtrip.html');           
            //document.getElementById("SearchTypeOneWay").checked = true;
            //$('#booking_engine_center').load('include/roundtrip.html');
//            document.getElementById("ReturnFlightTR3").style.display = "none";
//            document.getElementById("ReturnFlightTR4").style.display = "none";
//            document.getElementById("booking_engine_center").style.background = "transparent url(images/engine_part2_bgd.png)  no-repeat ";
//            document.getElementById("booking_engine_center").style.height = "380px";
//           
            break;
        case "MultiDestination":
//            $("#newdiv").contents().remove();
            $('#newdiv').load('include/multidestination.html');
//            document.getElementById("booking_engine_center").style.background = "transparent url(images/engine_part2_bgd_large.png) no-repeat ";
//            document.getElementById("booking_engine_center").style.height = "474px";

            break;
    }
}
// How many segment need to display
function newbuildPanelTwo() {
    segTotal = document.forms.AirSearchForm.segCount.value;
    for (var a = 0; a < segTotal; a++) {
        PanelTwo.rows[a].style.display = "block"
    }
}

var dtCh = "/";
var minYear = 1900;
var maxYear = 2100;

function isInteger(s) {
    var i;
    for (i = 0; i < s.length; i++) {
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag) {
    var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary(year) {
    // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ((!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28);
}
function DaysArray(n) {
    for (var i = 1; i <= n; i++) {
        this[i] = 31
        if (i == 4 || i == 6 || i == 9 || i == 11) { this[i] = 30 }
        if (i == 2) { this[i] = 29 }
    }
    return this
}

function isDate(dtStr) {
    dtCh = "/";
    var daysInMonth = DaysArray(12)
    var pos1 = dtStr.indexOf(dtCh)
    var pos2 = dtStr.indexOf(dtCh, pos1 + 1)
    var strMonth = dtStr.substring(0, pos1)
    var strDay = dtStr.substring(pos1 + 1, pos2)
    var strYear = dtStr.substring(pos2 + 1)
    strYr = strYear
    if (strDay.charAt(0) == "0" && strDay.length > 1) strDay = strDay.substring(1)
    if (strMonth.charAt(0) == "0" && strMonth.length > 1) strMonth = strMonth.substring(1)
    for (var i = 1; i <= 3; i++) {
        if (strYr.charAt(0) == "0" && strYr.length > 1) strYr = strYr.substring(1)
    }
    month = parseInt(strMonth)
    day = parseInt(strDay)
    year = parseInt(strYr)
    var Error = '';
    var flag = true;
    if (pos1 == -1 || pos2 == -1) {

        flag = false;
    }
    if (strMonth.length < 1 || month < 1 || month > 12) {

        flag = false;
    }
    if (strDay.length < 1 || day < 1 || day > 31 || (month == 2 && day > daysInFebruary(year)) || day > daysInMonth[month]) {

        flag = false;
    }
    if (strYear.length != 4 || year == 0 || year < minYear || year > maxYear) {

        flag = false;
    }
    if (dtStr.indexOf(dtCh, pos2 + 1) != -1 || isInteger(stripCharsInBag(dtStr, dtCh)) == false) {

        flag = false;
    }
    if (flag == true)
        return ''
    else
        return 'Enter Date as mm/dd/yyyy'
}


function ValidateFlightSearch() {
    alert_message = "";
    var flag = true;

    // start check4_def_val
    if (document.forms["AirSearchForm"].toCity.value == "Airport or City") {


        alert_message += " Please enter destination airport\n";
        flag = false;

    }
    else {
        if (document.forms["AirSearchForm"].toCity.value == "Airport or City") {
            flag = true;
        }
    }

    if (document.forms["AirSearchForm"].fromCity.value == "Airport or City") {
        alert_message += " Please enter arrival airport\n";


        flag = false;
    }
    if (flag == false) {
        alert(alert_message);
        return false;
    }
    //End check4_def_val

    formObj = document.forms["AirSearchForm"];
    alert_message = "";

    if (formObj.searchType[0].checked == true || formObj.searchType[1].checked == true) {
        var Error = '';
        if (formObj.flyDate_from.value == "" || formObj.flyDate_from.value == formObj.flyDate_from.getAttribute("defValue"))
            alert_message += " - Departure date\n";


        else if (Error = isDate(formObj.flyDate_from.value)) {
            if (Error != '') {
                alert_message += " - Departure Date - " + Error + "\n";
            }
        }
        if (formObj.searchType[0].checked == true) {

            if (formObj.flyDate_return.value == "" || formObj.flyDate_return.value == formObj.flyDate_return.getAttribute("defValue"))
                alert_message += " - Return date\n";

            else if (formObj.flyDate_from.value != "" && formObj.flyDate_return.value != "" && formObj.flyDate_from.value != formObj.flyDate_from.getAttribute("defValue") && formObj.flyDate_return.value != formObj.flyDate_return.getAttribute("defValue")) {
                Error = '';
                if (Error = isDate(formObj.flyDate_return.value)) {

                    if (Error != '') {
                        alert_message += " - Return Date - " + Error + "\n";
                    }
                }

                if (formObj.flyDate_from.getAttribute("defValue") == "dd/mm/yyyy") {
                    var tmp = formObj.flyDate_from.value.split('/');
                    var flyDate_from;
                    var flyDate_return;

                    if (tmp.length == 3)
                        flyDate_from = tmp[1] + "/" + tmp[0] + "/" + tmp[2];

                    tmp = formObj.flyDate_return.value.split('/');

                    if (tmp.length == 3)
                        flyDate_return = tmp[1] + "/" + tmp[0] + "/" + tmp[2];

                    if (new Date(flyDate_from) > new Date(flyDate_return))
                        alert_message += " - Return date should be greater than departure date\n";


                }
                else {
                    if (new Date(formObj.flyDate_from.value) > new Date(formObj.flyDate_return.value))
                        alert_message += " - Return date should be greater than departure date\n";
                }
            }
        }
    }


    //date validation end

   
    if (formObj.searchType[2] != null) {

        if (formObj.searchType[2].checked) {
            var isExit = false;
            for (i = 1; i <= document.forms["AirSearchForm"].segCount.value; i++) {
                var Error = '';
                if (formObj["fromCity_" + i].value == "" || formObj["fromCity_" + i].value == "Airport or City") alert_message += " - flight #" + i + " departure city\n";
                if (formObj["toCity_" + i].value == "" || formObj["toCity_" + i].value == "Airport or City") alert_message += " - flight #" + i + " arrival city\n";
                if (formObj["flyDate_" + i].value == "" || formObj["flyDate_" + i].value == formObj["flyDate_" + i].getAttribute("defValue")) alert_message += " - flight #" + i + " departure date\n";

                if (Error = isDate(formObj["flyDate_" + i].value) && formObj["flyDate_" + i].value != "") {
                    if (Error != '') {
                        Error = isDate(formObj["flyDate_" + i].value);
                        alert_message += " - flight #" + i + " departure date - " + Error + "\n";
                    }
                }
                else {
                    if (i > 1) {
                        for (j = 1; j < i; j++) {

                            if (formObj["flyDate_" + i].getAttribute("defValue") == "dd/mm/yyyy") {
                                var tmp = formObj["flyDate_" + i].value.split('/');
                                var flyDate_from;
                                var flyDate_return;

                                if (tmp.length == 3)
                                    flyDate_from = tmp[1] + "/" + tmp[0] + "/" + tmp[2];

                                tmp = formObj["flyDate_" + j].value.split('/');

                                if (tmp.length == 3)
                                    flyDate_return = tmp[1] + "/" + tmp[0] + "/" + tmp[2];

                                if (flyDate_from < flyDate_return && formObj["flyDate_" + i].value != "" && formObj["flyDate_" + i].value != formObj["flyDate_" + i].getAttribute("defValue")) {
                                    isExit = true;
                                    alert_message += " - flight #" + i + " departure date\n";
                                    break;
                                }
                            }
                            else {
                                //alert(formObj["flyDate_" + j].value);

                                if (Date.parse(formObj["flyDate_" + i].value) < Date.parse(formObj["flyDate_" + j].value) && formObj["flyDate_" + i].value != "" && formObj["flyDate_" + i].value != formObj["flyDate_" + i].getAttribute("defValue")) {
                                    isExit = true;
                                    alert_message += " - flight #" + i + " departure date should not be less than - flight #" + j + "\n";
                                    break;
                                }
                            }
                        }
                    }
                    if (isExit) break;
                }

            }
        }
    }
    //date validation end


    if (formObj.searchType[0].checked == false && formObj.searchType[1].checked == false) {
        if (formObj.searchType[2] != null) {
            if (formObj.searchType[2].checked == false) {
                alert("Please choose trip type");
                return false;
            }
        }
        else {
            alert("Please choose trip type");
            return false;
        }
    }
    if (formObj.searchType[0].checked) {
        if (formObj.fromCity.value == "" || formObj.fromCity.value == formObj.fromCity.getAttribute("defValue")) alert_message += " - departure city\n";
        if (formObj.toCity.value == "" || formObj.toCity.value == formObj.toCity.getAttribute("defValue")) alert_message += " - arrival city\n";


    }
    else if (formObj.searchType[1].checked) {
        if (formObj.fromCity.value == "" || formObj.fromCity.value == formObj.fromCity.getAttribute("defValue")) alert_message += " - departure city\n";
        if (formObj.toCity.value == "" || formObj.toCity.value == formObj.toCity.getAttribute("defValue")) alert_message += " - arrival city\n";

    }


    passNum = parseInt(formObj.aCount.value) + parseInt(formObj.cCount.value);
    if (formObj.sCount != null) {
        passNum = passNum + parseInt(formObj.sCount.value);
    }
    if (formObj.yCount != null) {
        passNum = passNum + parseInt(formObj.yCount.value);
    }

    if (passNum == 0) {
        alert_message += " - the number of passengers travelling \n";
    }

    if (alert_message != "") {
        alert("The following information was not provided : \n" + alert_message);
        return false;
    }
    return true;
}