var dtCh= "/";																			
var minYear=1900;
var maxYear=2100;

function isInteger(s){
var i;
for (i = 0; i < s.length; i++){   
	// Check that current character is number.
	var c = s.charAt(i);
	if (((c < "0") || (c > "9"))) return false;
}
// All characters are numbers.
return true;
}

function stripCharsInBag(s, bag){
var i;
var returnString = "";
// Search through string's characters one by one.
// If character is not in bag, append to returnString.
for (i = 0; i < s.length; i++){   
	var c = s.charAt(i);
	if (bag.indexOf(c) == -1) returnString += c;
}
return returnString;
}

function daysInFebruary (year){
// February has 29 days in any year evenly divisible by four,
// EXCEPT for centurial years which are not also divisible by 400.
return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
for (var i = 1; i <= n; i++) {
	this[i] = 31
	if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
	if (i==2) {this[i] = 29}
} 
return this
}

function isDate(dtStr){
var daysInMonth = DaysArray(12)
var pos1=dtStr.indexOf(dtCh)
var pos2=dtStr.indexOf(dtCh,pos1+1)
var strMonth=dtStr.substring(0,pos1)
var strDay=dtStr.substring(pos1+1,pos2)
var strYear=dtStr.substring(pos2+1)
strYr=strYear
if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
for (var i = 1; i <= 3; i++) {
	if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
}
month=parseInt(strMonth)
day=parseInt(strDay)
year=parseInt(strYr)
if (pos1==-1 || pos2==-1){
	return false
}
if (strMonth.length<1 || month<1 || month>12){
return false
}
if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
return false
}
if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
return false
}
if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
return false
}
return true;
}

function isHistoryDate(dtStr)
{
if(!isDate(dtStr))
{
return false;
}
var start=new Date();
var end = dtStr;
var bufferA = Date.parse(start) ;
var bufferB = Date.parse(end) ;
var number = bufferB-bufferA ;
if (parseInt(number / 86400000) < 0) 
{
return true;
}
else
{
return false;
}
}

function isWeddingDate(dtStr)
{
if(!isDate(dtStr))
{
return false;
}
var start=new Date();
var end = dtStr;
var bufferA = Date.parse(start) ;
var bufferB = Date.parse(end) ;
var number = bufferB-bufferA ;
//alert(number/ 86400000);
if ((number / 86400000) < 0) 
{
return true;
}
else
{
return false;
}
}

function isDateDifferencePositive(dtStart,dtEnd)
{
	if(!isDate(dtStart))
	{
		return false;
	}
	if(!isDate(dtEnd))
	{
		return false;
	}

	var bufferA = Date.parse(dtStart) ;
	var bufferB = Date.parse(dtEnd) ;
	var number = bufferB-bufferA ;
	if (parseInt(number / 86400000) <= 0) 
	{
		return false;
	}
	else
	{
		return true;
	}			
}

function isDateDifferenceZero(dtStart,dtEnd)
{
	if(!isDate(dtStart))
	{
		return false;
	}
	if(!isDate(dtEnd))
	{
		return false;
	}

	var bufferA = Date.parse(dtStart) ;
	var bufferB = Date.parse(dtEnd) ;
	var number = bufferB-bufferA ;
	if (parseInt(number / 86400000) == 0) 
	{
		return true;
	}
	else
	{
		return false;
	}			
}
function isFlashNewsDateDifference(dtStart,dtEnd)
{
	if(!isDate(dtStart))
	{
		return false;
	}
	if(!isDate(dtEnd))
	{
		return false;
	}

	var bufferA = Date.parse(dtStart) ;
	var bufferB = Date.parse(dtEnd) ;
	var number = bufferB-bufferA ;
	if (parseInt(number / 86400000) < 0) 
	{
		return false;
	}
	else
	{
		return true;
	}			
}


/*var daysInMonth = DaysArray(12)
var pos1=dtStr.indexOf(dtCh)
var pos2=dtStr.indexOf(dtCh,pos1+1)
var strMonth=dtStr.substring(0,pos1)
var strDay=dtStr.substring(pos1+1,pos2)
var strYear=dtStr.substring(pos2+1)
strYr=strYear
if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
for (var i = 1; i <= 3; i++) {
	if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
}
month=parseInt(strMonth)
day=parseInt(strDay)
year=parseInt(strYr)
if (pos1==-1 || pos2==-1){
return false
}
if (strMonth.length<1 || month<1 || month>12){
return false
}
if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
return false
}
if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
return false
}
if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
return false
}
today=new Date()
var christmas=new Date(strYear,strMonth-1,strDay) //Month is 0-11 in JavaScript
if (today.getMonth()==11 && today.getDate()>25) //if Christmas has passed already
//christmas.setFullYear(christmas.getFullYear()+1) //calculate next year's Christmas
//Set 1 day in milliseconds
var one_day=1000*60*60*24

//Calculate difference btw the two dates, and convert to days
if(Math.ceil((today.getTime()-christmas.getTime())/(one_day))<=0)
{
return false;
}
else
{
return true;
}*/



function isFutureDate(dtStr){
var daysInMonth = DaysArray(12)
var pos1=dtStr.indexOf(dtCh)
var pos2=dtStr.indexOf(dtCh,pos1+1)
var strMonth=dtStr.substring(0,pos1)
var strDay=dtStr.substring(pos1+1,pos2)
var strYear=dtStr.substring(pos2+1)
strYr=strYear
if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
for (var i = 1; i <= 3; i++) {
	if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
}
month=parseInt(strMonth)
day=parseInt(strDay)
year=parseInt(strYr)
if (pos1==-1 || pos2==-1){
return false
}
if (strMonth.length<1 || month<1 || month>12){
return false
}
if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
return false
}
if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
return false
}
if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
return false
}
today=new Date()
var christmas=new Date(strYear,strMonth-1,strDay) //Month is 0-11 in JavaScript
//Set 1 day in milliseconds
var one_day=1000*60*60*24

//Calculate difference btw the two dates, and convert to days
if(Math.ceil((today.getTime()-christmas.getTime())/(one_day))<=0)
return true;
return false;
}																			

function isValidTime(strTime,strStart,strEnd,strDuration)
{
	if(strTime.indexOf(':') == -1)
	{
		return false;
	}
	var arrTime = strTime.split(':');
	var strHH = arrTime[0];
	var strMM = arrTime[1];	
	if ((strHH < strStart)||(strHH > strEnd))
	{
		return false;
	}
	if((strMM != strDuration)&&(strMM != '00'))
	{
		return false;
	}
return true;
}