/*
Created by Carlos, 2004-02-25 for Timetable page but can be reused elsewhere.
*/
function Time_ParseISO8601 (sISO, bWithTimeZone) {
/*
    ISO 8601:
    1999-07-03T00:00:00+0100
    JavaScript's Date.parse() format:
    1999/07/03 00:00:00 UTC+0100
*/
    var sYear = sISO.substr(0, 4);
    var sMonth = sISO.substr(5, 2);
    var sDay = sISO.substr(8, 2);
    var sHour = sISO.substr(11, 2);
    var sMinute = sISO.substr(14, 2);
    var sZone;

    if (bWithTimeZone)
        sZone = sISO.substr(19, 3).toString() + sISO.substr(23, 2); // offset from UTC
    else
        sZone = "+0000"; // make it a UTC time

    var sFormat = sYear + "/" + sMonth + "/" + sDay + " " + sHour + ":" + sMinute + ":00 UTC" + sZone

    return new Date(sFormat);
}

function Time_GetMonthName(iMonth) {
    switch (iMonth) {
        case 0: return "January"; break;
        case 1: return "February"; break;
        case 2: return "March"; break;
        case 3: return "April"; break;
        case 4: return "May"; break;
        case 5: return "June"; break;
        case 6: return "July"; break;
        case 7: return "August"; break;
        case 8: return "September"; break;
        case 9: return "October"; break;
        case 10: return "November"; break;
        case 11: return "December"; break;
        default: return "";
    }
}

function Time_GetWeekdayName(iDay) {
    switch (iDay) {
        case 0: return "Sunday"; break;
        case 1: return "Monday"; break;
        case 2: return "Tuesday"; break;
        case 3: return "Wednesday"; break;
        case 4: return "Thursday"; break;
        case 5: return "Friday"; break;
        case 6: return "Saturday"; break;
        default: return "";
    }
}

function CT_ToggleTimeZones(anchor) {
    var dTime, dOtherTime;
    var sZone = anchor.id.toString().toLowerCase();
    var iDay = 1;
    var iTime = 1;
    var obj;
    var bLocal = false;
    var iLastDay;

    switch (sZone) {
        case "race":
                bLocal = false;
                anchor.childNodes[0].nodeValue = "Convert To My Local Time";
                anchor.id = "local";
                break;
        default:
                bLocal = true;
                anchor.childNodes[0].nodeValue = "Convert To Race Local Time";
                anchor.id = "race";
    }

    obj = document.getElementById("CT_Time_" + iDay + "_" + iTime);

    while (obj != null) {
        iLastDay = -1;

        while (obj != null) {

            if(obj.className.indexOf('__') > -1) {
                var dates = obj.className.split('__');
                dTime = Time_ParseISO8601(dates[0], bLocal);
                eTime = Time_ParseISO8601(dates[1], bLocal);

                if ((iLastDay == -1) && (bLocal))
                {
                    iLastDay = Time_ParseISO8601(dates[0], !bLocal).getUTCDay();
                }
            } else {
                dTime = Time_ParseISO8601(obj.className, bLocal);
                var eTime = "";

                if ((iLastDay == -1) && (bLocal))
                {
                    iLastDay = Time_ParseISO8601(obj.className, !bLocal).getUTCDay();
                }
            }

            if (iTime == 1)
                if (bLocal)
                    var eaTime = document.getElementById("CT_Time_" + iDay);
                    if (eaTime) eaTime.innerHtml = Time_GetWeekdayName(dTime.getDay()) + " " + dTime.getDate() + " " + Time_GetMonthName(dTime.getMonth());
                else
                    var eaTime = document.getElementById("CT_Time_" + iDay);
                    if (eaTime) eaTime.innerHtml = Time_GetWeekdayName(dTime.getUTCDay()) + " " + dTime.getUTCDate() + " " + Time_GetMonthName(dTime.getUTCMonth());

            obj.childNodes[0].nodeValue = "";

            if (bLocal) {
                if ((iLastDay != dTime.getDay()) && (iLastDay >= 0))
                    obj.childNodes[0].nodeValue = "(" + Time_GetWeekdayName(dTime.getDay()).substr(0, 3) + ") ";

                var h = dTime.getHours();
                var ampm = 'a.m.';
                if(h > 12) {
                    h = h-12;
                    ampm = 'p.m.';
                } else if(h == 12) {
                    if (ZeroPadInteger(dTime.getMinutes()) == "00") {
                        h = "Noon";
                        ampm = '';
                    } else {
                        ampm = 'p.m.';
                    }
                }

                obj.childNodes[0].nodeValue += h;

                if(ZeroPadInteger(dTime.getMinutes()) != "00") {
                    obj.childNodes[0].nodeValue += ":" + ZeroPadInteger(dTime.getMinutes())
                }

                if(eTime != "") {
                    var eh = eTime.getHours();
                    if(eh >= 12) {
                        if (ampm == "a.m.") {
                            obj.childNodes[0].nodeValue += " " + ampm
                        };
                        if (eh > 12) {
                            eh -= 12;
                        }
                        ampm = 'p.m.';
                    } else if(eh == 12) {
                        if (ZeroPadInteger(eTime.getMinutes()) == "00") {
                            eh = "Noon";
                            ampm = '';
                        }
                    } else if(eh < 12) {
                    	if(ampm != 'a.m.') {
                    		obj.childNodes[0].nodeValue += " " + ampm
                    		ampm = 'a.m.'
                    	}
                    }

                    obj.childNodes[0].nodeValue += "-" + eh;

                    if(ZeroPadInteger(eTime.getMinutes()) != "00") {
                        obj.childNodes[0].nodeValue += ":" + ZeroPadInteger(eTime.getMinutes())
                    }
                }

                obj.childNodes[0].nodeValue += " " + ampm;

            } else {
                if ((iLastDay != dTime.getUTCDay()) && (iLastDay >= 0))
                    obj.childNodes[0].nodeValue = "(" + Time_GetWeekdayName(dTime.getUTCDay()).substr(0, 3) + ") ";

                var h = dTime.getUTCHours();
                var ampm = 'a.m.';
                if(h > 12) {
                    h = h-12;
                    ampm = 'p.m.';
                } else if(h == 12) {
                    if (ZeroPadInteger(dTime.getMinutes()) == "00") {
                        h = "Noon";
                        ampm = '';
                    } else {
                        ampm = 'p.m.';
                    }
                }

                obj.childNodes[0].nodeValue += h;

                if(ZeroPadInteger(dTime.getUTCMinutes()) != "00") {
                    obj.childNodes[0].nodeValue += ":" + ZeroPadInteger(dTime.getUTCMinutes())
                }

                if(eTime != "") {
                    var eh = eTime.getUTCHours();
                    if(eh >= 12) {
                        if (ampm == "a.m.") {
                            obj.childNodes[0].nodeValue += " " + ampm
                        };
                        if (eh > 12) {
                            eh -= 12;
                        }
                        ampm = 'p.m.';
                    } else if(eh == 12) {
                        if (ZeroPadInteger(eTime.getMinutes()) == "00") {
                            eh = "Noon";
                            ampm = '';
                        }
                    } else if(eh < 12) {
                    	if(ampm != 'a.m.') {
                    		obj.childNodes[0].nodeValue += " " + ampm
                    		ampm = 'a.m.'
                    	}
                    }

                    obj.childNodes[0].nodeValue += "-" + eh;

                    if(ZeroPadInteger(eTime.getUTCMinutes()) != "00") {
                        obj.childNodes[0].nodeValue += ":" + ZeroPadInteger(eTime.getUTCMinutes())
                    }
                }

                obj.childNodes[0].nodeValue += " " + ampm;
            }

            if (bLocal)
                iLastDay = dTime.getDay();
            else
                iLastDay = dTime.getUTCDay();

            iTime++;
            obj = document.getElementById("CT_Time_" + iDay + "_" + iTime);
        }

        iTime = 1;
        iDay++;
        obj = document.getElementById("CT_Time_" + iDay + "_" + iTime);
    }

    return false;
}

/*
Created by Carlos, 2004-02-25 for Timetable page but can be reused elsewhere.
*/
function ZeroPadInteger(integer) {
    string = "";

    // Only zero pads up to 99.

    try {
        integer = parseInt(integer, 10);

        if (integer < 0)
            string = integer;
        else if (integer < 10)
            string = "0" + integer.toString();
        else
            string = integer.toString();
    } catch (error) {
        // ignore it
    }

    return string;
}