/**
 * SimpledateFormat javascript class
 *
 * var reverseDateFormat = new SimpleDateFormat("YYYYMMdd");
 * var reverseDate = reverseDateFormat.format(new Date());
 * http://developer.android.com/reference/java/text/SimpleDateFormat.html
 * **/
 Date.prototype.getTimeZoneLong = function()
 {
	var currentTimezone = this.getTimezoneOffset();
	currentTimezone = (currentTimezone/60) * -1;
	var gmt = '';
	if (currentTimezone !== 0) {
	  gmt += currentTimezone > 0 ? '+' : '-';
	  gmt += (currentTimezone + 100).toString().substring(1) + ':00';
	}
	return gmt;
 }
 Date.prototype.getTimeZoneShort = function()
 {
	var currentTimezone = this.getTimezoneOffset();
	currentTimezone = (currentTimezone/60) * -1;
	var gmt = '';
	if (currentTimezone !== 0) {
	  gmt += currentTimezone > 0 ? '+' : '-';
	  gmt += (currentTimezone + 100).toString().substring(1) + '00';
	}
	return gmt;
 }
 Date.prototype.getTimeZoneGMT = function()
 {
	var currentTimezone = this.getTimezoneOffset();
	currentTimezone = (currentTimezone/60) * -1;
	var gmt = 'GMT';
	if (currentTimezone !== 0) {
	  gmt += currentTimezone > 0 ? '+' : '-';
	  gmt += (currentTimezone + 100).toString().substring(1) + ':00';
	}
	return gmt;
 }
 Date.prototype.getDayInYear = function()
 {
	var ngayDauNam = new Date(this.getFullYear(),0,1);
	return Math.floor((this - ngayDauNam)/(24*60*60*1000));
 }
 Date.prototype.getWeekInMonth = function()
 {
	var ngayDauThang = new Date(this.getFullYear(),this.getMonth(),1);
	var dayNum = (this - ngayDauThang)/(24*60*60*1000);
	return Math.floor(dayNum/7);
 }
 Date.prototype.getWeekInYear = function()
 {
	var ngayDauNam = new Date(this.getFullYear(),0,1);
	var dayNum = (this - ngayDauNam)/(24*60*60*1000);
	return Math.floor(dayNum/7);
 }
 Date.prototype.getTZAbbreFull = function()
 {
	return (new Date()).toString().split('(')[1].replace(')','');
 }
 Date.prototype.getTZAbbreShort = function()
 {
	var longName = (new Date()).toString().split('(')[1].replace(')','').split(' ');
	var shortName = '';
	for ( var t1 = 0; t1 < longName.length; t1++) {
		shortName += longName[t1].charAt(0);
	}
	return shortName;
 }
function SimpleDateFormat(formatString) {
    this.formatString = formatString;
    this.monthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
    this.dayNames = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
	this.ampm = ["am", "am", "am", "am", "am", "am", "am", "am", "am", "am", "am", "am", "pm", "pm", "pm", "pm", "pm", "pm", "pm", "pm", "pm", "pm", "pm", "pm"];

    this.format = function(aDate) {
        var localFormatString = formatString;
		var index = 0;
		var v = [];
        // The order is significant
		/*D	day in year*/
		/* D */
		localFormatString = localFormatString.replace(/D{1,}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getDayInYear();
		index += 1;
		
		/*E	day of week	(Text)	E/EE/EEE:Tue, EEEE:Tuesday, EEEEE:T*/
		/* EEEEE  */
        localFormatString = localFormatString.replace(/E{5,}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,1));
		index += 1;
		/* EEEE */
        localFormatString = localFormatString.replace(/E{4}/g, "\" + v[" + index + "] + \"");
		v[index] = (this.dayNames[aDate.getDay()]);
		index += 1;
        /* EEE  */
        localFormatString = localFormatString.replace(/E{3}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
        /* EE  */
        localFormatString = localFormatString.replace(/E{2}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
		/* E  */
        localFormatString = localFormatString.replace(/E/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
		
		/*F	day of week in month*/
		/* F   */
        localFormatString = localFormatString.replace(/F,/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getDay()+100).toString().substring(1);
		index += 1;
		
		/*G	era designator*/
		localFormatString = localFormatString.replace(/G/g, "\" + v[" + index + "] + \"");
		v[index] = 'AD';
		index += 1;
		
		/*H	hour in day (0-23)*/
		/* HH   */
        localFormatString = localFormatString.replace(/H{2,}/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getHours()+100).toString().substring(1);
		index += 1;
		
		/* H   */
        localFormatString = localFormatString.replace(/H/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getHours();
		index += 1;
		
		/*K	hour in am/pm (0-11)*/
		/* K   */
        localFormatString = localFormatString.replace(/K{1,}/g, "\" + v[" + index + "] + \"");
		v[index] = this.ampm[aDate.getHours()];
		index += 1;
		
		/*L	stand-alone month L:1 LL:01 LLL:Jan LLLL:January LLLLL:J*/
		/* LLLLL */
        localFormatString = localFormatString.replace(/L{5,}/g, "\" + v[" + index + "] + \"");
        v[index] = (this.monthNames[aDate.getMonth()]).substring(0,1);
		index += 1;
		/* LLLL */
        localFormatString = localFormatString.replace(/L{4}/g, "\" + v[" + index + "] + \"");
        v[index] = (this.monthNames[aDate.getMonth()]);
		index += 1;
		/* LLL  */
        localFormatString = localFormatString.replace(/L{3}/g, "\" + v[" + index + "] + \"");
        v[index] = ((this.monthNames[aDate.getMonth()]).substring(0,3));
		index += 1;
		/* LL   */
        localFormatString = localFormatString.replace(/L{2}/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getMonth()+101).toString().substring(1);
		index += 1;
		/* L   */
        localFormatString = localFormatString.replace(/L/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getMonth();
		index += 1;
		
		/*M	month in year M:1 MM:01 MMM:Jan MMMM:January MMMMM:J*/
		/* MMMMM */
        localFormatString = localFormatString.replace(/M{5,}/g, "\" + v[" + index + "] + \"");
        v[index] = (this.monthNames[aDate.getMonth()]).substring(0,1);
		index += 1;
		/* MMMM */
        localFormatString = localFormatString.replace(/M{4}/g, "\" + v[" + index + "] + \"");
        v[index] = (this.monthNames[aDate.getMonth()]);
		index += 1;
		/* MMM  */
        localFormatString = localFormatString.replace(/M{3}/g, "\" + v[" + index + "] + \"");
        v[index] = ((this.monthNames[aDate.getMonth()]).substring(0,3));
		index += 1;
		/* MM   */
        localFormatString = localFormatString.replace(/M{2}/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getMonth()+101).toString().substring(1);
		index += 1;
		/* M   */
        localFormatString = localFormatString.replace(/M/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getMonth() + 1;
		index += 1;
		
		/*S	fractional seconds*/
		/* SSS   */
        localFormatString = localFormatString.replace(/S{3,}/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getMilliseconds()+1000).toString().substring(1);
		index += 1;
		/* SS   */
        localFormatString = localFormatString.replace(/S{2}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getMilliseconds().toString().substring(0, 2);
		index += 1;
		/* S   */
        localFormatString = localFormatString.replace(/S/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getMilliseconds().toString().substring(0, 1);
		index += 1;
		
		/*W	week in month*/
		localFormatString = localFormatString.replace(/W/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getWeekInMonth();
		index += 1;
		
		/*Z	time zone (RFC 822) Z/ZZ/ZZZ:-0800 ZZZZ:GMT-08:00 ZZZZZ:-08:00*/
		/* ZZZZZ */
        localFormatString = localFormatString.replace(/Z{5,}/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getTimeZoneLong();
		index += 1;
		/* ZZZZ */
        localFormatString = localFormatString.replace(/Z{4}/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getTimeZoneGMT();
		index += 1;
		/* ZZZ  */
        localFormatString = localFormatString.replace(/Z{3}/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getTimeZoneShort();
		index += 1;
		/* ZZ   */
        localFormatString = localFormatString.replace(/Z{2}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTimeZoneShort();
		index += 1;
		/* Z   */
        localFormatString = localFormatString.replace(/Z/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTimeZoneShort();
		index += 1;
		
		/*a	am/pm marker*/
		/* a   */
        localFormatString = localFormatString.replace(/a{1,}/g, "\" + v[" + index + "] + \"");
		v[index] = this.ampm[aDate.getHours()];
		index += 1;
		
		/*c	stand-alone day of week	c/cc/ccc:Tue, cccc:Tuesday, ccccc:T*/
		/* ccccc  */
        localFormatString = localFormatString.replace(/c{5,}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,1));
		index += 1;
		/* cccc */
        localFormatString = localFormatString.replace(/c{4}/g, "\" + v[" + index + "] + \"");
		v[index] = (this.dayNames[aDate.getDay()]);
		index += 1;
        /* ccc  */
        localFormatString = localFormatString.replace(/c{3}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
        /* cc  */
        localFormatString = localFormatString.replace(/c{2}/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
		/* c  */
        localFormatString = localFormatString.replace(/c/g, "\" + v[" + index + "] + \"");
		v[index] = ((this.dayNames[aDate.getDay()]).substring(0,3));
		index += 1;
		
		/*d	day in month*/
		/* dd   */
        localFormatString = localFormatString.replace(/d{2,}/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getDate()+100).toString().substring(1);
		index += 1;
		/* d   */
        localFormatString = localFormatString.replace(/d/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getDate();
		index += 1;
		
		/*h	hour in am/pm (1-12)*/
		/* hh   */
        localFormatString = localFormatString.replace(/h{2,}/g, "\" + v[" + index + "] + \"");
		var hours = aDate.getHours()>12?aDate.getHours()-12:aDate.getHours();
		v[index] = (hours+100).toString().substring(1);
		index += 1;
		
		/* h   */
        localFormatString = localFormatString.replace(/h/g, "\" + v[" + index + "] + \"");
		v[index] = hours;
		index += 1;
		
		/*k	hour in day (1-24)*/
		/* kk   */
        localFormatString = localFormatString.replace(/k{2,}/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getHours()+101).toString().substring(1);
		index += 1;
		/* k   */
        localFormatString = localFormatString.replace(/k/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getHours()+1;
		index += 1;
		
		/*m	minute in hour*/
		/* mm   */
        localFormatString = localFormatString.replace(/m{2,}/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getMinutes()+100).toString().substring(1);
		index += 1;
		/* m   */
        localFormatString = localFormatString.replace(/m/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getMinutes();
		index += 1;
		
		/*s	second in minute*/
		/* ss   */
        localFormatString = localFormatString.replace(/s{2,}/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getSeconds()+100).toString().substring(1);
		index += 1;
		/* s   */
        localFormatString = localFormatString.replace(/s/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getSeconds();
		index += 1;
		
		/*w	week in year*/
		localFormatString = localFormatString.replace(/w/g, "\" + v[" + index + "] + \"");
        v[index] = aDate.getWeekInYear();
		index += 1;
		
		/*y	year yy:10 y/yyy/yyyy:2010*/
		/* yyyy */
        localFormatString = localFormatString.replace(/y{4,}/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getFullYear());
		index += 1;
		/* yyy */
        localFormatString = localFormatString.replace(/y{3}/g, "\" + v[" + index + "] + \"");
        v[index] = (aDate.getFullYear());
		index += 1;
		/* yy   */
        localFormatString = localFormatString.replace(/y{2}/g, "\" + v[" + index + "] + \"");
		v[index] = ((aDate.getFullYear()).toString().substring(2));
		index += 1;
		/* y */
        localFormatString = localFormatString.replace(/y/g, "\" + v[" + index + "] + \"");
		v[index] = (aDate.getFullYear());
		index += 1;
		
		/*z	time zone*/
		/* zzzz */
		localFormatString = localFormatString.replace(/z{4,}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTZAbbreFull();
		index += 1;
		/* zzz */
		localFormatString = localFormatString.replace(/z{3}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTZAbbreShort();
		index += 1;
		/* zz */
		localFormatString = localFormatString.replace(/z{2}/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTZAbbreShort();
		index += 1;
		/* z */
		localFormatString = localFormatString.replace(/z/g, "\" + v[" + index + "] + \"");
		v[index] = aDate.getTZAbbreShort();
		index += 1;

        localFormatString = "\"" + localFormatString + "\"";
        //prompt("localFormatString", localFormatString);
        var formatedDate = eval(localFormatString);
        return (formatedDate);
    }
}