function oDate() {
	this.dayName = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
	this.monthName = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	this.ordinal = ["zeroth","first","second","third","fourth","fifth","sixth","seventh","eighth","ninth","tenth","eleventh","twelfth","thirteenth","fourteenth","fifteenth","sixteenth","seventeenth","eighteenth","nineteenth","twentieth","twenty first","twenty second","twenty third","twenty fourth","twenty fifth","twenty sixth","twenty seventh","twenty eighth","twenty ninth","thirtieth","thirty first"];}

oDate.getDayName=function(date) {
	var dayName = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
	return dayName[date.getDay()];}

oDate.getMonthName=function(date) {
	var monthName = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	return monthName[date.getMonth()];}

oDate.clone=function(date) {
	clone=new Date();
	clone.setTime(date.getTime());
	return clone;}

oDate.getDateOnly=function(date) {
	if (date==undefined) date=new Date();
	date.setHours(0);
	date.setMinutes(0);
	date.setSeconds(0);
	date.setMilliseconds(0);
	return date;}

oDate.getMinutes=function(date) {
	return date.getHours() * 60 + date.getMinutes();}
	
oDate.daysInMonth=function(date) {
	return 32 - new Date(date.getYear(), date.getMonth(), 32).getDate();}

oDate.SQLToJavascript=function(date) {
	return new Date(date.substring(0,4),date.substring(5,7)-1,date.substring(8,10),date.substring(11,13),date.substring(14,16),date.substring(17,19),date.substring(20))}

oDate.javascriptToSQL=function(date) {
	if (date==undefined) date=new Date();
	return date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate() + ' ' + date.getHours() + ':' + date.getMinutes() + ':' + date.getSeconds() + '.' + date.getMilliseconds();}

oDate.javascriptToSqlDate=function(date) {
	if (date==undefined) date=new Date();
	return date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate();}

oDate.getDateString=function() {
	var theDate = new Date;
	return theDate.getFullYear().toString() + oUtilities.leadingZero(theDate.getMonth()+1,2) + oUtilities.leadingZero(theDate.getDate(),2) + oUtilities.leadingZero(theDate.getHours(),2)  + oUtilities.leadingZero(theDate.getMinutes(),2)  + oUtilities.leadingZero(theDate.getSeconds(),2)  + oUtilities.leadingZero(theDate.getMilliseconds(),3);}

oDate.getDisplay=function(date, hideTime) {
	var dateDisplay=oDate.getDayName(date).substring(0,3) + ' ' + date.getDate() + ' ' + oDate.getMonthName(date).substring(0,3) + ' ';
	dateDisplay+=date.getFullYear();
	if (!hideTime) {
		var hours=date.getHours(),modifier='am';
		//if (hours>12) hours=hours-12;
		//if (hours>11) modifier='pm';
		dateDisplay+=', ' + oUtilities.leadingZero(hours,2)  + ':' + oUtilities.leadingZero(date.getMinutes(),2);}
	return dateDisplay;}

oDate.firstDayOfWeek=function() {
	today=new Date();
	today=new Date(today.getFullYear(),today.getMonth(),today.getDate());
	return new Date(today.getTime()-(today.getDay()-1)*86400000);}

oDate.datediff=function(unit, date1, date2) {
	var date1s,date2s;
	if (unit=='minute') {
		date1s=new Date(date1.getFullYear(),date1.getMonth(),date1.getDate(),date1.getHours(),date1.getMinutes(),0,0);
		date2s=new Date(date2.getFullYear(),date2.getMonth(),date2.getDate(),date2.getHours(),date2.getMinutes(),0,0);
		return (date1s.getTime() - date2s.getTime()) / 60000;}
	else if (unit=='hour') {
		date1s=new Date(date1.getFullYear(),date1.getMonth(),date1.getDate(),date1.getHours(),date1.getMinutes(),0,0);
		date2s=new Date(date2.getFullYear(),date2.getMonth(),date2.getDate(),date2.getHours(),date2.getMinutes(),0,0);
		return Math.floor((date1s.getTime() - date2s.getTime()) / 3600000);}
	else if (unit=='day') {
		date1s=new Date(date1.getFullYear(),date1.getMonth(),date1.getDate(),0,0,0,0);
		date2s=new Date(date2.getFullYear(),date2.getMonth(),date2.getDate(),0,0,0,0);
		//Round because where the clocks go back and forward, the integer is not exact.
		return Math.round((date1s.getTime() - date2s.getTime()) / 86400000);}
	else if (unit=='month') {return (date1.getFullYear() * 12 + date1.getMonth()) - (date2.getFullYear() * 12 + date2.getMonth())}
	else {return 'error'}}
	
oDate.getDate8String=function(date) {
	return date.getFullYear().toString() + oUtilities.leadingZero(date.getMonth()+1,2) + oUtilities.leadingZero(date.getDate(),2);}