/*  DepressedPress.com DP_DateExtensions

Author: Jim Davis, the Depressed Press of Boston
Date: June 20, 2006
Contact: webmaster@depressedpress.com
Website: www.depressedpress.com

Full documentation can be found at:
http://www.depressedpress.com/Content/Development/JavaScript/Extensions/

DP_DateExtensions adds features to the JavaScript "Date" datatype.

Copyright (c) 1996-2006, The Depressed Press of Boston (depressedpress.com)

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

+) Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 

+) Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 

+) Neither the name of the DEPRESSED PRESS OF BOSTON (DEPRESSEDPRESS.COM) nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* "Date" Object Extensions */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

Date.is = function(Ob) {
	try {
		if ( typeof Ob == "object" ) {
			if ( Ob.constructor == Date ) {
				return true;
			};
		};
	} catch (CurError) { };
	return false;
};


Date.parseIso8601 = function(CurDate) {

		// Check the input parameters
	if ( typeof CurDate != "string" ) {
		return null;
	};
		// Set the fragment expressions
	var S = "[\\-/:.]";
	var Yr = "((?:1[6-9]|[2-9][0-9])[0-9]{2})";
	var Mo = S + "((?:1[012])|(?:0[1-9])|[1-9])";
	var Dy = S + "((?:3[01])|(?:[12][0-9])|(?:0[1-9])|[1-9])";
	var Hr = "(2[0-4]|[01]?[0-9])";
	var Mn = S + "([0-5]?[0-9])";
	var Sd = "(?:" + S + "([0-5]?[0-9])(?:[.,]([0-9]+))?)?";
	var TZ = "(?:(Z)|(?:([\+\-])(1[012]|[0]?[0-9])(?::?([0-5]?[0-9]))?))?";
		// RegEx the input
		// First check: Just date parts (month and day are optional)
		// Second check: Full date plus time (seconds, milliseconds and TimeZone info are optional)
	var TF;
	if ( TF = new RegExp("^" + Yr + "(?:" + Mo + "(?:" + Dy + ")?)?" + "$").exec(CurDate) ) {} else if ( TF = new RegExp("^" + Yr + Mo + Dy + "T" + Hr + Mn + Sd + TZ + "$").exec(CurDate) ) {};
		// If the date couldn't be parsed, return null
	if ( !TF ) { return null };
		// Default the Time Fragments if they're not present
	if ( !TF[2] ) { TF[2] = 1 } else { TF[2] = TF[2] - 1 };
	if ( !TF[3] ) { TF[3] = 1 };
	if ( !TF[4] ) { TF[4] = 0 };
	if ( !TF[5] ) { TF[5] = 0 };
	if ( !TF[6] ) { TF[6] = 0 };
	if ( !TF[7] ) { TF[7] = 0 };
	if ( !TF[8] ) { TF[8] = null };
	if ( TF[9] != "-" && TF[9] != "+" ) { TF[9] = null };
	if ( !TF[10] ) { TF[10] = 0 } else { TF[10] = TF[9] + TF[10] };
	if ( !TF[11] ) { TF[11] = 0 } else { TF[11] = TF[9] + TF[11] };
		// If there's no timezone info the data is local time
	if ( !TF[8] && !TF[9] ) {
		return new Date(TF[1], TF[2], TF[3], TF[4], TF[5], TF[6], TF[7]);
	};
		// If the UTC indicator is set the date is UTC
	if ( TF[8] == "Z" ) {
		return new Date(Date.UTC(TF[1], TF[2], TF[3], TF[4], TF[5], TF[6], TF[7]));
	};
		// If the date has a timezone offset
	if ( TF[9] == "-" || TF[9] == "+" ) {
			// Get current Timezone information
		var CurTZ = new Date().getTimezoneOffset();
		var CurTZh = TF[10] - ((CurTZ >= 0 ? "-" : "+") + Math.floor(Math.abs(CurTZ) / 60))
		var CurTZm = TF[11] - ((CurTZ >= 0 ? "-" : "+") + (Math.abs(CurTZ) % 60))
			// Return the date
		return new Date(TF[1], TF[2], TF[3], TF[4] - CurTZh, TF[5] - CurTZm, TF[6], TF[7]);
	};
		// If we've reached here we couldn't deal with the input, return null
	return null;

};


/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* "Date" Object Prototype Extensions */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

Date.prototype.dateFormat = function(Mask) {

	var FormattedDate = "";
	var Ref_MonthFullName = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
	var Ref_MonthAbbreviation = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
	var Ref_DayFullName = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
	var Ref_DayAbbreviation = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];

		// Convert any supported simple masks into "real" masks
	switch (Mask) {
		case "short":
			Mask = "m/d/yy";		
		break;
		case "medium":
			Mask = "mmm d, yyyy";
		break;
		case "long":
			Mask = "mmmm d, yyyy";
		break;
		case "full":
			Mask = "dddd, mmmm d, yyyy";
		break;
	};

		// Tack a temporary space at the end of the mask to ensure that the last character isn't a mask character
	Mask += " ";

		// Parse the Mask
	var CurChar;
	var MaskPart = "";
	for ( var Cnt = 0; Cnt < Mask.length; Cnt++ ) {
			// Get the character
		CurChar = Mask.charAt(Cnt);
			// Determine if the character is a mask element
		if ( (CurChar != "d") && (CurChar != "m") && (CurChar != "y") ) {
				// Determine if we need to parse a MaskPart or not
			if ( MaskPart != "" ) {
					// Convert the mask part to the date value
				switch (MaskPart) {
					case "d":
						FormattedDate += this.getDate();
						break;
					case "dd":
						FormattedDate += ("0" + this.getDate()).slice(-2);
						break;
					case "ddd":
						FormattedDate += Ref_DayAbbreviation[this.getDay()];
						break;
					case "dddd":
						FormattedDate += Ref_DayFullName[this.getDay()];
						break;
					case "m":
						FormattedDate += this.getMonth() + 1;
						break;
					case "mm":
						FormattedDate += ("0" + (this.getMonth() + 1)).slice(-2);
						break;
					case "mmm":
						FormattedDate += Ref_MonthAbbreviation[this.getMonth()];
						break;
					case "mmmm":
						FormattedDate += Ref_MonthFullName[this.getMonth()];
						break;
					case "yy":
						FormattedDate += ("0" + this.getFullYear()).slice(-2);
						break;
					case "yyyy":
						FormattedDate += ("000" + this.getFullYear()).slice(-4);
						break;
				};
					// Reset the MaskPart to nothing
				MaskPart = "";
			};
				// Add the character to the output
			FormattedDate += CurChar;
		} else {
				// Add the current mask character to the MaskPart
			MaskPart += CurChar;
		};
	};

		// Remove the temporary space from the end of the formatted date
	FormattedDate = FormattedDate.substring(0,FormattedDate.length - 1);

		// Return the formatted date
	return FormattedDate;

};


Date.prototype.timeFormat = function(Mask) {

	var FormattedTime = "";

		// Convert any supported simple masks into "real" masks
	switch (Mask) {
		case "short":
			Mask = "h:mm tt";		
		break;
		case "medium":
			Mask = "h:mm:ss tt";
		break;
		case "long":
			Mask = "h:mm:ss.l tt";
		break;
		case "full":
			Mask = "h:mm:ss.l tt";
		break;
	};

		// Tack a temporary space at the end of the mask to ensure that the last character isn't a mask character
	Mask += " ";

		// Parse the Mask
	var CurChar;
	var MaskPart = "";
	for ( var Cnt = 0; Cnt < Mask.length; Cnt++ ) {
			// Get the character
		CurChar = Mask.charAt(Cnt);
			// Determine if the character is a mask element
		if ( (CurChar != "h") && (CurChar != "H") && (CurChar != "m") && (CurChar != "s") && (CurChar != "l") && (CurChar != "t") && (CurChar != "T") ) {
				// Determine if we need to parse a MaskPart or not
			if ( MaskPart != "" ) {
					// Convert the mask part to the date value
				switch (MaskPart) {
					case "h":
						var CurValue = this.getHours();
						if ( CurValue >  12 ) {
							CurValue = CurValue - 12;
						};
						FormattedTime += CurValue;
						break;
					case "hh":
						var CurValue = this.getHours();
						if ( CurValue >  12 ) {
							CurValue = CurValue - 12;
						};
						FormattedTime += ("0" + CurValue).slice(-2);
						break;
					case "H":
						FormattedTime += ("0" + this.getHours()).slice(-2);
						break;
					case "HH":
						FormattedTime += ("0" + this.getHours()).slice(-2);
						break;
					case "m":
						FormattedTime += this.getMinutes();
						break;
					case "mm":
						FormattedTime += ("0" + this.getMinutes()).slice(-2);
						break;
					case "s":
						FormattedTime += this.getSeconds();
						break;
					case "ss":
						FormattedTime += ("0" + this.getSeconds()).slice(-2);
						break;
					case "l":
						FormattedTime += ("00" + this.getMilliseconds()).slice(-3);
						break;
					case "t":
						if ( this.getHours() >= 12 ) {
							FormattedTime += "p";
						} else {
							FormattedTime += "a";
						};
						break;
					case "tt":
						if ( this.getHours() >= 12 ) {
							FormattedTime += "pm";
						} else {
							FormattedTime += "am";
						};
						break;
					case "T":
						if ( this.getHours() >= 12 ) {
							FormattedTime += "P";
						} else {
							FormattedTime += "A";
						};
						break;
					case "TT":
						if ( this.getHours() >= 12 ) {
							FormattedTime += "PM";
						} else {
							FormattedTime += "AM";
						};
						break;
				};
					// Reset the MaskPart to nothing
				MaskPart = "";
			};
				// Add the character to the output
			FormattedTime += CurChar;
		} else {
				// Add the current mask character to the MaskPart
			MaskPart += CurChar;
		};
	};

		// Remove the temporary space from the end of the formatted date
	FormattedTime = FormattedTime.substring(0,FormattedTime.length - 1);

		// Return the formatted date
	return FormattedTime;

};


Date.prototype.iso8601Format = function(Style, isUTC) {

	var FormattedDate = "";

	switch (Style) {
		case "Y":
			FormattedDate += this.dateFormat("yyyy");
			break;
		case "YM":
			FormattedDate += this.dateFormat("yyyy-mm");
			break;
		case "YMD":
			FormattedDate += this.dateFormat("yyyy-mm-dd");
			break;
		case "YMDHM":
			FormattedDate += this.dateFormat("yyyy-mm-dd") + "T" + this.timeFormat("HH:mm");
			break;
		case "YMDHMS":
			FormattedDate += this.dateFormat("yyyy-mm-dd") + "T" + this.timeFormat("HH:mm:ss");
			break;
		case "YMDHMSM":
			FormattedDate += this.dateFormat("yyyy-mm-dd") + "T" + this.timeFormat("HH:mm:ss.l");
			break;
	};

	if ( Style == "YMDHM" || Style == "YMDHMS" || Style == "YMDHMSM" ) {
		if ( isUTC ) {
			FormattedDate += "Z";
		} else {
				// Get TimeZone Information
			var TimeZoneOffset = this.getTimezoneOffset();
			var TimeZoneInfo = (TimeZoneOffset >= 0 ? "-" : "+") + ("0" + (Math.floor(Math.abs(TimeZoneOffset) / 60))).slice(-2) + ":" + ("00" + (Math.abs(TimeZoneOffset) % 60)).slice(-2);
			FormattedDate += TimeZoneInfo;
		};
	};	

		// Return the date
	return FormattedDate;

};


Date.prototype.dayOfYear = function() {

	var FirstOfYear = new Date(this.getFullYear(), 0, 1);
	return this.diff(FirstOfYear, "days") + 1;

};


Date.prototype.add = function(Amount, DatePart, Destructive) {

	DatePart = DatePart.toLowerCase(DatePart);

	var ReturnDate = new Date(this);
	var CurAbsAmount = Math.abs(Amount);

		// Set the Multiplication factors for unambigiuos times (MS times these will result in the appropriate data part)
	var Factors = new Object();
	Factors.milliseconds = 1;	// 1 ms to the ms (1 * 1000)
	Factors.seconds = 1000;		// 1000 ms to the second (1 * 1000)
	Factors.minutes = 60000;	// 60 seconds to the minute (1 * 1000 * 60)
	Factors.quarterhours = 900000;	// 15 minutes to the quarter hour (1 * 1000 * 60 * 15)
	Factors.warhols = 900000;	// 15 minutes of fame (1 * 1000 * 60 * 15)
	Factors.halfhours = 1800000;	// 30 minutes to the half hour (1 * 1000 * 60 * 15)
	Factors.hours = 3600000;	// 60 minutes to the hour (1 * 1000 * 60 * 60)
	Factors.days = 86400000;	// 24 hours to the day (1 * 1000 * 60 * 60 * 24)
	Factors.weeks = 604800000;	// 7 days per week (1 * 1000 * 60 * 60 * 24 * 7)

		// Do the math
	switch (DatePart) {
			// The following are all unambigously convertable to ms equivalents
		case "milliseconds":
		case "seconds":
		case "minutes":
		case "quarterhours":
		case "warhols":
		case "halfhours":
		case "hours":
		case "days":
		case "weeks":
			ReturnDate = new Date( this.getTime() + (Amount * Factors[DatePart]) );
			break;
		case "businessdays":
			if ( CurAbsAmount > 5 ) {
				var CurWeeks = Math.floor(CurAbsAmount / 5);
				var CurDays = CurAbsAmount % 5;
				if ( Amount < 0 ) {
					CurWeeks = -CurWeeks;
					CurDays = -CurDays;
				};
			} else {
				var CurWeeks = 0;
				var CurDays = Amount;
			};
				// Add the number of weeks to the date
			ReturnDate = ReturnDate.add(CurWeeks, "weeks");
				// Now add the days
			ReturnDate = ReturnDate.add(CurDays, "days");
				// If we've landed on a weekend push us
			if ( ReturnDate.getDay() == 0  ) {
				if ( Amount < 0 ) {
					ReturnDate = ReturnDate.add(-2, "days");
				} else {
					ReturnDate = ReturnDate.add(1, "days");
				};
			};
			if ( ReturnDate.getDay() == 6  ) {
				if ( Amount < 0 ) {
					ReturnDate = ReturnDate.add(-1, "days");
				} else {
					ReturnDate = ReturnDate.add(2, "days");
				};
			};
            break;
		case "businessweeks":
			ReturnDate = ReturnDate.add(Amount * 5, "businessdays");
			break;
		case "wholeweeks":
				// Move to the nearest Sunday
			if ( Amount < 0 ) {
				ReturnDate = ReturnDate.add(-(ReturnDate.getDay()), "days");
			} else {
				ReturnDate = ReturnDate.add(ReturnDate.getDay() + (6 - ReturnDate.getDay()), "days");
			};
				// Now add the weeks
			ReturnDate = ReturnDate.add(Amount, "weeks");
			break;
		case "months":
				// Months are tricky - they have different number of days
				// First split the amount into the number of years and months
			if ( CurAbsAmount > 11 ) {
				var CurYears = Math.floor(CurAbsAmount / 12);
				var CurMonths = CurAbsAmount % 12;
				if ( Amount < 0 ) {
					CurYears = -CurYears;
					CurMonths = -CurMonths;
				};
			} else {
				var CurYears = 0;
				var CurMonths = Amount;
			};
				// Add the number of years to the date
			ReturnDate = ReturnDate.add(CurYears, "years");
				// Now add the months
			var TempReturnDate = new Date(ReturnDate);
			TempReturnDate.setDate(1);
			TempReturnDate = new Date( new Date(TempReturnDate).setMonth(TempReturnDate.getMonth() + CurMonths) );
			ReturnDate = new Date( new Date(ReturnDate).setMonth(ReturnDate.getMonth() + CurMonths) );
				// Determine if the months got thrown off (due to too many days in the current month compared to the target)
			if ( ReturnDate.getMonth() != TempReturnDate.getMonth() ) {
					// Set the date to the last day of the previous month
				ReturnDate.setDate(0)
			};

			break;
		case "years":
				// February 29th may cause problems
			var Feb29 = false;
			if ( ReturnDate.getMonth() == 1 && ReturnDate.getDate() == 29 ) {
				Feb29 = true;
			};
				// Add Years directly as a data part
			ReturnDate = new Date( new Date(this).setFullYear(this.getFullYear() + Amount) );
				// If Feb29th then check to ensure that the date hasn't changed the month
			if ( Feb29 ) {
				if ( ReturnDate.getMonth != 1 ) {
					ReturnDate.setDate(0);
				};
			};
			break;
	};

		// Return the time
	if ( !Destructive ) {
		return ReturnDate;		
	} else {
		this.setTime(ReturnDate.getTime());
		return this;
	};

};


Date.prototype.diff = function(CompareDate, DatePart) {

	DatePart = DatePart.toLowerCase(DatePart);

	var Diff;
		// Set the dates in order, Date1 previous
	if ( this.getTime() <= CompareDate.getTime() ) {
		var Date1 = new Date(this);
		var Date2 = new Date(CompareDate);
	} else {
		var Date1 = new Date(CompareDate);
		var Date2 = new Date(this);
	};

		// Set the Multiplication factors for unambigiuos times (MS times these will result in the appropriate data part)
	var Factors = new Object();
	Factors.milliseconds = 1;	// 1 ms to the ms (1 * 1000)
	Factors.seconds = 1000;		// 1000 ms to the second (1 * 1000)
	Factors.minutes = 60000;	// 60 seconds to the minute (1 * 1000 * 60)
	Factors.quarterhours = 900000;	// 15 minutes to the quarter hour (1 * 1000 * 60 * 15)
	Factors.warhols = 900000;	// 15 minutes of fame (1 * 1000 * 60 * 15)
	Factors.halfhours = 1800000;	// 30 minutes to the half hour (1 * 1000 * 60 * 15)
	Factors.hours = 3600000;	// 60 minutes to the hour (1 * 1000 * 60 * 60)
	Factors.days = 86400000;	// 24 hours to the day (1 * 1000 * 60 * 60 * 24)
	Factors.weeks = 604800000;	// 7 days per week (1 * 1000 * 60 * 60 * 24 * 7)

		// Do the math
	switch (DatePart) {
			// The following are all unambigously convertable to ms equivalents
		case "milliseconds":
		case "seconds":
		case "minutes":
		case "quarterhours":
		case "warhols":
		case "halfhours":
		case "hours":
		case "days":
		case "weeks":
				// Get the Base Difference (the difference in ms)
			var BaseDiff = Date1.getTime() - Date2.getTime();
				// Set the Diff
			Diff = parseInt( BaseDiff / Factors[DatePart] );
			break;
		case "businessdays":
				// Count through the business days
			var BDaysCnt = 0;
			while ( Date1.getTime() < Date2.getTime() ) {
				Date1 = Date1.add(1, "days");
				if ( Date1.getDay() > 0 && Date1.getDay() < 6 ) {
					BDaysCnt++;				
				};
			};
			if ( Date2.getDay() == 0 || Date2.getDay() == 6 ) {
				Diff = BDaysCnt;
			} else {
					// Determine if the two partial days equal a whole day
				if ( Date1.diff(Date2, "days") > 0 ) {
					Diff = BDaysCnt;
				} else {
					Diff = BDaysCnt - 1;
				};
			};
            break;
		case "businessweeks":
			Diff = parseInt( Date1.diff(Date2, "businessdays") / 5 );
			break;
		case "wholeweeks":
				// Move Date1 to the nearest Sunday
			Date1 = Date1.add(Date1.getDay() + (6 - Date1.getDay()), "days");
				// Now get the number of weeks between the new dates
			Diff = Date1.diff(Date2, "weeks");
			break;
		case "months":
				// Get the months for years (if any)
			var MonthsCnt = Date1.diff(Date2, "years") * 12;
				// Add the months from the years
			Date1 = Date1.add(MonthsCnt, "months");
				// Finish adding up the count of months
			while ( Date1.getTime() < Date2.getTime() ) {
				Date1 = Date1.add(1, "months");
				MonthsCnt++;
			};
			Diff = MonthsCnt - 1;
			break;
		case "years":
			var YearsCnt = 0;
				// Count up the years
			while ( Date1.getTime() < Date2.getTime() ) {
				Date1 = Date1.add(1, "years");
				YearsCnt++;
			};
			Diff = YearsCnt - 1;
			break;
	};

		// Return the time
	return Math.abs(Diff);

};


Date.prototype.compare = function(CompareDate, DatePart) {

	if ( !DatePart ) {
		var DatePart = "millisecond";
	};
	DatePart = DatePart.toLowerCase(DatePart);

	var Date1 = new Date(this);
	var Date2 = new Date(CompareDate);

	var Result;
		// Set the precision by equalizing higher precision elements
	switch (DatePart) {
		case "millisecond":
			break;
		case "second":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			break;
		case "minute":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			Date1.setSeconds(1);
			Date2.setSeconds(1);
			break;
		case "hour":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			Date1.setSeconds(1);
			Date2.setSeconds(1);
			Date1.setMinutes(1);
			Date2.setMinutes(1);
			break;
		case "day":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			Date1.setSeconds(1);
			Date2.setSeconds(1);
			Date1.setMinutes(1);
			Date2.setMinutes(1);
			Date1.setHours(1);
			Date2.setHours(1);
			break;
		case "month":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			Date1.setSeconds(1);
			Date2.setSeconds(1);
			Date1.setMinutes(1);
			Date2.setMinutes(1);
			Date1.setHours(1);
			Date2.setHours(1);
			Date1.setDate(1);
			Date2.setDate(1);
			break;
		case "year":
			Date1.setMilliseconds(1);
			Date2.setMilliseconds(1);
			Date1.setSeconds(1);
			Date2.setSeconds(1);
			Date1.setMinutes(1);
			Date2.setMinutes(1);
			Date1.setHours(1);
			Date2.setHours(1);
			Date1.setDate(1);
			Date2.setDate(1);
			Date1.setMonth(1);
			Date2.setMonth(1);
			break;
	};

		// Do the comparison
	if ( Date1.getTime() == Date2.getTime() ) {
		Result = 0;
	} else if ( Date1.getTime() < Date2.getTime() ) {
		Result = -1;
	} else {
		Result = 1;
	};

		// Return the results
	return Result;

};