/*
* Today's Hebrew Date
* (c) Copyright 1996: Right to Left Software
*
* Reference: Understanding The Jewish Calendar / Rabbi Nathan Bushwick
*/

browserName = navigator.appName;
version = "";
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer <= 4) version = "n3";

if (version == "n3") {
	document.write("דפדנך מיושן מדי. לא ניתן לצפות בתאריך העברי.");
}
else {

	var HebrewLeapYears = "0010010100100100101";
	var Version = 1.00;
	function IsHebrewLeapYear(year) {
		var y = (year - 1) % 19;
		return parseInt(HebrewLeapYears.charAt(y));
	}
	function InitHebrewMonthsNames(isleap) {
		this.length = (isleap) ? 13 : 12;
		this[0] = "תשרי";
		this[1] = "חשוון";
		this[2] = "כסלו";
		this[3] = "טבת";
		this[4] = "שבט";
		this[5] = "אדר";
		var incr = 0;
		if (isleap) {
			this[5] = "אדר א'";
			this[6] = "אדר ב'";
			incr = 1;
		}
		this[6 + incr] = "ניסן";
		this[7 + incr] = "אייר";
		this[8 + incr] = "סיוון";
		this[9 + incr] = "תמוז";
		this[10 + incr] = "אב";
		this[11 + incr] = "אלול";
	}
	var HebrewMonthsNames = new InitHebrewMonthsNames(false);
	var HebrewMonthsNamesLeap = new InitHebrewMonthsNames(true);

	function InitGlobalTable() {
		this.length = 2002;
		this[1980] = "11S0";
		this[1981] = "29S2";
		this[1982] = "18S3";
		this[1983] = "08S3";
		this[1984] = "27S2";
		this[1985] = "16S0";
		this[1986] = "04O3";
		this[1987] = "24S2";
		this[1988] = "12S0";
		this[1989] = "30S3";
		this[1990] = "20S2";
		this[1991] = "09S3";
		this[1992] = "28S0";
		this[1993] = "16S3";
		this[1994] = "06S2";
		this[1995] = "25S3";
		this[1996] = "14S0";
		this[1997] = "02O2";
		this[1998] = "21S3";
		this[1999] = "11S3";
		this[2000] = "30S0";
		this[2001] = "18S2";
		this[2002] = "07S3";
		this[2003] = "27S3";
		this[2004] = "16S0";
		this[2005] = "04O2";
		this[2006] = "23S3";
		this[2007] = "13S0";
		this[2008] = "30S2";
		this[2009] = "19S3";
		this[2010] = "09S3";
		this[2011] = "29S2";
		this[2012] = "17S0";
		this[2013] = "05S3";
		this[2014] = "25S2";
		this[2015] = "14S3";
		this[2016] = "03O0";
		this[2017] = "21S2";
		this[2018] = "10S3";
		this[2019] = "30S3";
		this[2020] = "19S0";
	}

	var GlobalTable = new InitGlobalTable();
	/*
	* Convert Julian year to Hebrew year
	*/
	function JulianYearToHebrew(/* int */year) {
		return year + 3760;
	}
	function HebrewToJulianYear(/* int */year) {
		return year - 3760;
	}
	/*
	* Year length in days
	* indexed by the year type, given in GlobalTable
	*/
	function InitYearLength(isleap) {
		this.length = 4;
		if (isleap) {
			this[0] = 383;
			//this[1] = ; error
			this[2] = 384;
			this[3] = 385;
		} else {
			this[0] = 353;
			//this[1] = ; error
			this[2] = 354;
			this[3] = 355;
		}
	}
	var HebrewYearLengthLeap = new InitYearLength(true);
	var HebrewYearLength = new InitYearLength(false);
	var Tishrei = 0;
	var Cheshvan = 1;
	var Kislev = 2;
	var Adar1 = 5;
	var Adar2 = 6;
	var HebMonths30 = "1010101010101";
	var HebMonths30Leap = "10101011010101";
	function DaysInHebrewFixedMonth(month, year) {
		var incr;
		if (IsHebrewLeapYear(year))
			incr = parseInt(HebMonths30Leap.charAt(month));
		else
			incr = parseInt(HebMonths30.charAt(month));
		return 29 + incr; // 29 or 30
	}


	function DaysInCheshvan(hebyear) {
		var ytype = GlobalTable[HebrewToJulianYear(hebyear) - 1].charAt(3);
		if (ytype == 3)
			return 30;
		else
			return 29;
	}

	function DaysInKislev(hebyear) {
		var ytype = GlobalTable[HebrewToJulianYear(hebyear) - 1].charAt(3);
		if (ytype == 0)
			return 29;
		else
			return 30;
	}

	function DaysInHebrewMonth(month, year) {
		if (month == Cheshvan)
			return DaysInCheshvan(year);
		else if (month == Kislev)
			return DaysInKislev(year);
		else
			return DaysInHebrewFixedMonth(month, year);
	}





	function DaysInHebrewYear(/* int */year) {
		var ytype = GlobalTable[year].charAt(3);
		if (IsHebrewLeapYear(year)) {
			return HebrewYearLengthLeap[ytype];
		} else {
			return HebrewYearLength[ytype];
		}
	}

	var MsecPerDay = 1000 * 3600 * 24;  // miliseconds per day

	/*
	* Add days to a Julian date
	*/
	function AddDays(
	/* date */date,
	/* int */days) {
		var time = date.getTime();
		time += days * MsecPerDay;
		date.setTime(time);

		return date;
	}


	/*
	* given a Julian date of a holiday (e.g. rosh hashana),
	* returns the date that the same holiday occurred in the year 'toyear'
	*/
	function SameHolidayInJulianYear(
	/* date */rosh_shana,
	/* int */toyear) {
		var fromyear = rosh_shana.getFullYear() + 1900;
		var incr = 1; // increment fromyear

		if (fromyear == toyear)
			return rosh_shana;
		else if (fromyear > toyear)
			incr = -1; // decrement from_year

		var days;
		for (days = 0; fromyear != toyear; fromyear += incr) {
			days += DaysInHebrewYear(JulianYearToHebrew(fromyear));
		}
		AddDays(rosh_shana, incr * days);
		return rosh_shana;
	}
	// returns date when Rosh Hashana occurs on this year
	function GetRoshHashana(/* int */cvyear) {
		var month;
		var day;
		var yearstr = GlobalTable[cvyear];
		var m = yearstr.charAt(2);
		month = 8; // usually September
		if (m == 'O')
			month = 9; // sometimes October
		day = parseInt(yearstr.charAt(0)) * 10 + parseInt(yearstr.charAt(1));
		return new Date(cvyear, month, day);
	}

	/*
	* The following functions are methods for
	* HebrewDate object
	*/

	// is last month of the year?
	function IsHebLastMonth() {
		if (this.month == 11 && !IsHebrewLeapYear(this.year))
			return true;

		if (this.month == 12 && IsHebrewLeapYear(this.year))
			return true;

		return false;
	}

	// go to next Hebrew month
	function HebNextMonth() {
		if (this.IsLastMonth()) {
			this.year++;
			this.month = 0;
		} else
			this.month++;

		this.DaysInThisMonth = DaysInHebrewMonth(this.month, this.year);
	}

	// next Hebrew day
	function HebNextDay() {
		this.day++;
		if (this.day > this.DaysInThisMonth) {
			this.day = 1;
			this.NextMonth();
		}

	}

	// add days to Hebrew date
	function HebAddDays(days) {
		while (days > 0) {
			if (this.day == 1 && days >= this.DaysInThisMonth) {
				days -= this.DaysInThisMonth;
				this.NextMonth();
			} else {
				days--;
				this.NextDay();
			}
		}
		//document.write("Current date: " + this.day + ", " + this.month + ", " + this.year + "<br>");
	}

	// print Hebrew date
	function HebPrint() {
		var ThisMonthName = (IsHebrewLeapYear(this.year)) ?
										HebrewMonthsNamesLeap[this.month] :

											HebrewMonthsNames[this.month];
		// לוח מועדים
		if (ThisMonthName == "תשרי") {
			if (this.day == 1) { this.holiday = "א' דראש השנה"; }
			if (this.day == 2) { this.holiday = "ב' דראש השנה"; }
			if (this.day == 3) { this.holiday = "צום גדליה"; }
			if (this.day == 9) { this.holiday = "ערב יום הכיפורים"; }
			if (this.day == 10) { this.holiday = "יום הכיפורים"; }
			if (this.day == 15) { this.holiday = "סוכות"; }
			if (this.day == 16) { this.holiday = "א' דחול המועד סוכות"; }
			if (this.day == 17) { this.holiday = "ב' דחול המועד סוכות"; }
			if (this.day == 18) { this.holiday = "ג' דחול המועד סוכות"; }
			if (this.day == 19) { this.holiday = "ד' דחול המועד סוכות"; }
			if (this.day == 20) { this.holiday = "ה' דחול המועד סוכות"; }
			if (this.day == 21) { this.holiday = "ו' דחול המועד סוכות - הושענא רבא"; }
			if (this.day == 22) { this.holiday = "שמחת תורה"; }
		}

		if (ThisMonthName == "כסלו") {
			if (this.day == 25) { this.holiday = "נר ראשון של חנוכה"; }
			if (this.day == 26) { this.holiday = "נר שני של חנוכה"; }
			if (this.day == 27) { this.holiday = "נר שלישי של חנוכה"; }
			if (this.day == 28) { this.holiday = "נר רביעי של חנוכה"; }
			if (this.day == 29) { this.holiday = "נר חמישי של חנוכה"; }
		}

		if (ThisMonthName == "טבת") {
			if (this.day == 1) { this.holiday = "נר שישי של חנוכה"; }
			if (this.day == 2) { this.holiday = "נר שביעי של חנוכה"; }
			if (this.day == 3) { this.holiday = "נר שמיני של חנוכה"; }
			if (this.day == 10) { this.holiday = "צום עשרה בטבת"; }
		}

		if (ThisMonthName == "שבט") {
			if (this.day == 15) { this.holiday = "חג האילנות"; }
		}

		// ימים מיוחדים בחודש אדר בהנחה שאין חודש אדר נוסף (שנה מעוברת)
		if (ThisMonthName == "אדר") {
			if (this.day == 13) { this.holiday = "תענית אסתר"; }
			if (this.day == 14) { this.holiday = "פורים"; }
			if (this.day == 15) { this.holiday = "שושן פורים"; }
		}

		// ימים מיוחדים בחודש אדר ב' במידה והוא קיים
		if (ThisMonthName == "אדר ב'") {
			if (this.day == 13) { this.holiday = "תענית אסתר"; }
			if (this.day == 14) { this.holiday = "פורים"; }
			if (this.day == 15) { this.holiday = "שושן פורים"; }
		}

		if (ThisMonthName == "ניסן") {
			if (this.day == 14) { this.holiday = "ותענית בכורות וערב הפסח"; }
			if (this.day == 15) { this.holiday = "חג ראשון של פסח"; }
			if (this.day == 16) { this.holiday = "א' חול המועד פסח"; }
			if (this.day == 17) { this.holiday = "ב' חול המועד פסח"; }
			if (this.day == 18) { this.holiday = "ג' חול המועד פסח"; }
			if (this.day == 19) { this.holiday = "ד' חול המועד פסח"; }
			if (this.day == 20) { this.holiday = "ה' חול המועד פסח"; }
			if (this.day == 21) { this.holiday = "חג שני של פסח"; }
			if (this.day == 27) { this.holiday = "יום הזיכרון לשואה ולגבורה"; }
		}

		if (ThisMonthName == "אייר") {
			if (this.day == 2) { this.holiday = "יום הזיכרון לחללי מערכות ישראל"; }
			if (this.day == 3) {
				this.holiday = "יום העצמאות ה - ";
				this.holiday += (this.year - 5708);
				this.holiday += " למדינת ישראל";
			}
			if (this.day == 18) { this.holiday = "ל\"ג בעומר - הדלקת מדורות"; }
			if (this.day == 28) { this.holiday = "יום ירושלים"; }
		}

		if (ThisMonthName == "סיוון") {
			if (this.day == 5) { this.holiday = "ערב שבועות"; }
			if (this.day == 6) { this.holiday = "שבועות"; }
			if (this.day == 7) { this.holiday = "שבועות"; }
		}

		if (ThisMonthName == "תמוז") {
			if (this.day == 17) { this.holiday = "צום י\"ז בתמוז"; }
		}

		if (ThisMonthName == "אלול") {
			if (this.day == 29) { this.holiday = "ערב ראש השנה"; }
		}

		// הפכת היום במספר לעברית
		if (this.day == "1") { this.day = "א'"; }
		if (this.day == "2") { this.day = "ב'"; }
		if (this.day == "3") { this.day = "ג'"; }
		if (this.day == "4") { this.day = "ד'"; }
		if (this.day == "5") { this.day = "ה'"; }
		if (this.day == "6") { this.day = "ו'"; }
		if (this.day == "7") { this.day = "ז'"; }
		if (this.day == "8") { this.day = "ח'"; }
		if (this.day == "9") { this.day = "ט'"; }
		if (this.day == "10") { this.day = "י'"; }
		if (this.day == "11") { this.day = "י\"א"; }
		if (this.day == "12") { this.day = "י\"ב"; }
		if (this.day == "13") { this.day = "י\"ג"; }
		if (this.day == "14") { this.day = "י\"ד"; }
		if (this.day == "15") { this.day = "ט\"ו"; }
		if (this.day == "16") { this.day = "ט\"ז"; }
		if (this.day == "17") { this.day = "י\"ז"; }
		if (this.day == "18") { this.day = "י\"ח"; }
		if (this.day == "19") { this.day = "י\"ט"; }
		if (this.day == "20") { this.day = "כ'"; }
		if (this.day == "21") { this.day = "כ\"א"; }
		if (this.day == "22") { this.day = "כ\"ב"; }
		if (this.day == "23") { this.day = "כ\"ג"; }
		if (this.day == "24") { this.day = "כ\"ד"; }
		if (this.day == "25") { this.day = "כ\"ה"; }
		if (this.day == "26") { this.day = "כ\"ו"; }
		if (this.day == "27") { this.day = "כ\"ז"; }
		if (this.day == "28") { this.day = "כ\"ח"; }
		if (this.day == "29") { this.day = "כ\"ט"; }
		if (this.day == "30") { this.day = "ל'"; }

		// הפיכת השנה ממספרים לעברית
		if (this.year == "5761") { this.year = "תשס\"א"; }
		if (this.year == "5762") { this.year = "תשס\"ב"; }
		if (this.year == "5763") { this.year = "תשס\"ג"; }
		if (this.year == "5764") { this.year = "תשס\"ד"; }
		if (this.year == "5765") { this.year = "תשס\"ה"; }
		if (this.year == "5766") { this.year = "תשס\"ו"; }
		if (this.year == "5767") { this.year = "תשס\"ז"; }
		if (this.year == "5768") { this.year = "תשס\"ח"; }
		if (this.year == "5769") { this.year = "תשס\"ט"; }
		if (this.year == "5770") { this.year = "תש\"ע"; }
		if (this.year == "5771") { this.year = "תשע\"א"; }
		if (this.year == "5772") { this.year = "תשע\"ב"; }
		if (this.year == "5773") { this.year = "תשע\"ג"; }
		if (this.year == "5774") { this.year = "תשע\"ד"; }
		if (this.year == "5775") { this.year = "תשע\"ה"; }
		if (this.year == "5776") { this.year = "תשע\"ו"; }
		if (this.year == "5777") { this.year = "תשע\"ז"; }
		if (this.year == "5778") { this.year = "תשע\"ח"; }
		if (this.year == "5779") { this.year = "תשע\"ט"; }
		if (this.year == "5780") { this.year = "תש\"פ"; }


		if (this.holiday) {

			document.write("" + this.day + " ב" + ThisMonthName + " " + this.year);
		}

		else {
			document.write("" + this.day + " ב" + ThisMonthName + " " + this.year);
		}
	}

	// constructor for HebrewDate object
	function InitHebrewDate(day, month, year) {
		// fields
		this.day = day;
		this.month = month;
		this.year = year;
		this.DaysInThisMonth = DaysInHebrewMonth(month, year);
		// methods
		this.IsLastMonth = IsHebLastMonth;
		this.NextMonth = HebNextMonth;
		this.NextDay = HebNextDay;
		this.AddDays = HebAddDays;
		this.Print = HebPrint;
	}
	// end of HebrewDate object definition
	var Today = new Date();

	var isnMonths = new Array("ינואר", "פברואר", "מרץ", "אפריל", "מאי", "יוני", "יולי", "אוגוסט", "ספטמבר", "אוקטובר", "נובמבר", "דצמבר");
	var isnDays = new Array("יום ראשון", "יום שני", "יום שלישי", "יום רביעי", "יום חמישי", "יום שישי", "יום שבת");
	todayG = new Date();

	function getFullYear(d) {
		var y = d.getYear();
		if (y < 1000) { y += 1900 };
		return y;
	}

	function ShowHebrewDate(date) {
		//var MyRoshHashana = new Date(99, 8, 11); // sep 11, 1999
		var PrevYear = date.getFullYear() - 1;
		var PrevRoshHashana = GetRoshHashana(PrevYear);
		var DiffDays = Math.floor((date.getTime() - PrevRoshHashana.getTime()) / MsecPerDay);
		var HebrewYear = JulianYearToHebrew(PrevYear);
		var HebrewDate = new InitHebrewDate(1, 0, HebrewYear + 1); // 1, Tishrei, year
		var Year = getFullYear(todayG);
		
		//original code has added 1 to DiffDays.if difference in summer clock between israel and other places, don't add 1.
		HebrewDate.AddDays(DiffDays);
		
		// date in English
		//document.write("<span dir='rtl'>");
		//document.write(""+isnDays[todayG.getDay()]+", ");
		HebrewDate.Print();
		//document.write(" ("+todayG.getDate()+" ב"+isnMonths[todayG.getMonth()]+" "+Year+" למניינם)");
		//document.write("<\/span>");
	}

	ShowHebrewDate(Today);

}