// JavaScript Document
// Date Validation Javascript
var charRegxp = /^([a-zA-Z]+)$/;
var numRegxp = /^([0-9]+)$/;
var charnumRegxp=/^([a-zA-Z0-9]+)$/;
var urlRegxp = /(ftp|http):\/\/([_a-z\d\-]+(\.[_a-z\d\-]+)+)(([_a-z\d\-\\\.\/]+[_a-z\d\-\\\/])+)*/ ;
var emailRegxp = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,2}$/;
var emailRegxp1 = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

				function checkValidDate(dateStr) {
				// dateStr must be of format month day year with either slashes
				// or dashes separating the parts. Some minor changes would have
				// to be made to use day month year or another format.
				// This function returns True if the date is valid.
				var slash1 = dateStr.indexOf("/");
				if (slash1 == -1) { slash1 = dateStr.indexOf("-"); }
				// if no slashes or dashes, invalid date
				if (slash1 == -1) { return false; }
				var dateMonth = dateStr.substring(0, slash1)
				var dateMonthAndYear = dateStr.substring(slash1+1, dateStr.length);
				var slash2 = dateMonthAndYear.indexOf("/");
				if (slash2 == -1) { slash2 = dateMonthAndYear.indexOf("-"); }
				// if not a second slash or dash, invalid date
				if (slash2 == -1) { return false; }
				var dateDay = dateMonthAndYear.substring(0, slash2);
				var dateYear = dateMonthAndYear.substring(slash2+1, dateMonthAndYear.length);
				if ( (dateMonth == "") || (dateDay == "") || (dateYear == "") ) { return false; }
				// if any non-digits in the month, invalid date
				for (var x=0; x < dateMonth.length; x++) {
					var digit = dateMonth.substring(x, x+1);
					if ((digit < "0") || (digit > "9")) { return false; }
				}
				// convert the text month to a number
				var numMonth = 0;
				for (var x=0; x < dateMonth.length; x++) {
					digit = dateMonth.substring(x, x+1);
					numMonth *= 10;
					numMonth += parseInt(digit);
				}
				if ((numMonth <= 0) || (numMonth > 12)) { return false; }
				// if any non-digits in the day, invalid date
				for (var x=0; x < dateDay.length; x++) {
					digit = dateDay.substring(x, x+1);
					if ((digit < "0") || (digit > "9")) { return false; }
				}
				// convert the text day to a number
				var numDay = 0;
				for (var x=0; x < dateDay.length; x++) {
					digit = dateDay.substring(x, x+1);
					numDay *= 10;
					numDay += parseInt(digit);
				}
				if ((numDay <= 0) || (numDay > 31)) { return false; }
				// February can't be greater than 29 (leap year calculation comes later)
				if ((numMonth == 2) && (numDay > 29)) { return false; }
				// check for months with only 30 days
				if ((numMonth == 4) || (numMonth == 6) || (numMonth == 9) || (numMonth == 11)) { 
					if (numDay > 30) { return false; } 
				}
				// if any non-digits in the year, invalid date
				for (var x=0; x < dateYear.length; x++) {
					digit = dateYear.substring(x, x+1);
					if ((digit < "0") || (digit > "9")) { return false; }
				}
				// convert the text year to a number
				var numYear = 0;
				for (var x=0; x < dateYear.length; x++) {
					digit = dateYear.substring(x, x+1);
					numYear *= 10;
					numYear += parseInt(digit);
				}
				// Year must be a 2-digit year or a 4-digit year
				if ( (dateYear.length != 2) && (dateYear.length != 4) ) { return false; }
				// if 2-digit year, use 50 as a pivot date
				if ( (numYear < 50) && (dateYear.length == 2) ) { numYear += 2000; }
				if ( (numYear < 100) && (dateYear.length == 2) ) { numYear += 1900; }
				if ((numYear <= 0) || (numYear > 9999)) { return false; }
				// check for leap year if the month and day is Feb 29
				if ((numMonth == 2) && (numDay == 29)) {
					var div4 = numYear % 4;
					var div100 = numYear % 100;
					var div400 = numYear % 400;
					if (div4 != 0) { return false; }
					if ((div100 == 0) && (div400 != 0)) { return false; }
				}
				// date is valid
				return true;
			}
	function compareDates (value1, value2) {
   var date1, date2;
   var month1, month2;
   var year1, year2;
   

   month1 = value1.substring (0, value1.indexOf ("/"));
   date1 = value1.substring (value1.indexOf ("/")+1, value1.lastIndexOf ("/"));
   year1 = value1.substring (value1.lastIndexOf ("/")+1, value1.length);

   month2 = value2.substring (0, value2.indexOf ("/"));
   date2 = value2.substring (value2.indexOf ("/")+1, value2.lastIndexOf ("/"));
   year2 = value2.substring (value2.lastIndexOf ("/")+1, value2.length);
  
   if (year1 > year2) return 1;
   else if (year1 < year2) return -1;
   else if (month1 > month2) return 1;
   else if (month1 < month2) return -1;
   else if (date1 > date2) return 1;
   else if (date1 < date2) return -1;
   else return 0;
} 
String.prototype.trim = function() { return this.replace(/^\s+|\s+$/, ''); };


// Function to get date from format

function getDateFromFormat(val,format) {
	val=val+"";
	format=format+"";
	var i_val=0;
	var i_format=0;
	var c="";
	var token="";
	var token2="";
	var x,y;
	var now=new Date();
	var year=now.getYear();
	var month=now.getMonth()+1;
	var date=1;
	var hh=now.getHours();
	var mm=now.getMinutes();
	var ss=now.getSeconds();
	var ampm="";
	
	while (i_format < format.length) {
		// Get next token from format string
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		// Extract contents of value based on format token
		if (token=="yyyy" || token=="yy" || token=="y") {
			if (token=="yyyy") { x=4;y=4; }
			if (token=="yy")   { x=2;y=2; }
			if (token=="y")    { x=2;y=4; }
			year=_getInt(val,i_val,x,y);
			if (year==null) { return 0; }
			i_val += year.length;
			if (year.length==2) {
				if (year > 70) { year=1900+(year-0); }
				else { year=2000+(year-0); }
				}
			}
		else if (token=="MMM"||token=="NNN"){
			month=0;
			for (var i=0; i<MONTH_NAMES.length; i++) {
				var month_name=MONTH_NAMES[i];
				if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
					if (token=="MMM"||(token=="NNN"&&i>11)) {
						month=i+1;
						if (month>12) { month -= 12; }
						i_val += month_name.length;
						break;
						}
					}
				}
			if ((month < 1)||(month>12)){return 0;}
			}
		else if (token=="EE"||token=="E"){
			for (var i=0; i<DAY_NAMES.length; i++) {
				var day_name=DAY_NAMES[i];
				if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
					i_val += day_name.length;
					break;
					}
				}
			}
		else if (token=="MM"||token=="M") {
			month=_getInt(val,i_val,token.length,2);
			if(month==null||(month<1)||(month>12)){return 0;}
			i_val+=month.length;}
		else if (token=="dd"||token=="d") {
			date=_getInt(val,i_val,token.length,2);
			if(date==null||(date<1)||(date>31)){return 0;}
			i_val+=date.length;}
		else if (token=="hh"||token=="h") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>12)){return 0;}
			i_val+=hh.length;}
		else if (token=="HH"||token=="H") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>23)){return 0;}
			i_val+=hh.length;}
		else if (token=="KK"||token=="K") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>11)){return 0;}
			i_val+=hh.length;}
		else if (token=="kk"||token=="k") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>24)){return 0;}
			i_val+=hh.length;hh--;}
		else if (token=="mm"||token=="m") {
			mm=_getInt(val,i_val,token.length,2);
			if(mm==null||(mm<0)||(mm>59)){return 0;}
			i_val+=mm.length;}
		else if (token=="ss"||token=="s") {
			ss=_getInt(val,i_val,token.length,2);
			if(ss==null||(ss<0)||(ss>59)){return 0;}
			i_val+=ss.length;}
		else if (token=="a") {
			if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";}
			else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";}
			else {return 0;}
			i_val+=2;}
		else {
			if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
			else {i_val+=token.length;}
			}
		}
	// If there are any trailing characters left in the value, it doesn't match
	if (i_val != val.length) { return 0; }
	// Is date valid for month?
	if (month==2) {
		// Check for leap year
		if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
			if (date > 29){ return 0; }
			}
		else { if (date > 28) { return 0; } }
		}
	if ((month==4)||(month==6)||(month==9)||(month==11)) {
		if (date > 30) { return 0; }
		}
	// Correct hours value
	if (hh<12 && ampm=="PM") { hh=hh-0+12; }
	else if (hh>11 && ampm=="AM") { hh-=12; }
	var newdate=new Date(year,month-1,date,hh,mm,ss);
	return newdate.getTime();
	}