var dtCh= "/";
var minYear=1800;
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 isValidDate(strDate, dateFormat)
{
    var daysInMonth = DaysArray(12)
    var strDay;
	var strMonth;
	var strYear;
	var dtConvertedDate;
	convertedDate = new Array(2);
	if(strDate == "")
	{
	    return true;
	}
	if(strDate.indexOf("/") != 0)
	{ 
	    convertedDate = strDate.split("/");
	}
	else if(strDate.indexOf("-") != 0)
	{ 
	    convertedDate = strDate.split("-");
	}
	else if(strDate.indexOf(".") != 0)
	{ 
	    convertedDate = strDate.split(".");
	}
    else if(strDate.indexOf(" ") != 0)
	{ 
	    convertedDate = strDate.split(" ");
	} 
	if (convertedDate.length != 3)
	{
	    alert("Please enter valid date");
	    return false
	}
	if(dateFormat == "dd/mm/yyyy")
	{
	    strDay = convertedDate[0];
	    strMonth = convertedDate[1];
	    strYear = convertedDate[2];
    }
    else if (dateFormat == "mm/dd/yyyy")
	{
	    strDay = convertedDate[1];
	    strMonth = convertedDate[0];
	    strYear = convertedDate[2];
    }	
	 else if (dateFormat == "yyyy/mm/dd")
	{
	    strDay = convertedDate[2];
	    strMonth = convertedDate[1];
	    strYear = convertedDate[0];
    }	
     else if (dateFormat == "dd/mmm/yyyy")
	{
	    strDay = convertedDate[0];
	    strMonth = convertedDate[1];
	    strYear = convertedDate[2];
    }	
    if (isInteger(strDay) != true || isInteger(strMonth) != true || isInteger(strYear) != true) 
    {
        
        alert("Please enter a valid date");
        return false;   
    }  
    day = parseInt(strDay,10);
    month = parseInt(strMonth,10);
    year = parseInt(strYear,10);
   
    if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month");
	    return false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day");
		return false;
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear);
		return false;
	}
    return true;
}


function validateForIntNum(obj,event)
{
    var keyCode=event.keyCode?event.keyCode:event.which?event.which:event.charCode;
    
    if ((keyCode>=48 && keyCode<=57) || keyCode==46) 
        return true;
    else
        return false;
}
	
function validateForInt(obj,event)
{
    var keyCode=event.keyCode?event.keyCode:event.which?event.which:event.charCode;
    
    if (keyCode>=48 && keyCode<=57) 
        return true;
    else
        return false;
}
	
function countlen(obj, event, mlen)
{
    var txtlen = obj.value.length;        
    var keyCode=event.keyCode?event.keyCode:event.which?event.which:event.charCode;
    if(txtlen > mlen)
    {
        if(keyCode == 8)
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    else
    {
        return true;
    }
}	

 function PadDigits(n, totalDigits) 
    { 
        n = n.toString(); 
        var pd = ''; 
        if (totalDigits > n.length) 
        { 
            for (i=0; i < (totalDigits-n.length); i++) 
            { 
                pd += '0'; 
            } 
        } 
        return pd + n.toString(); 
    } 

//To compare dates
function compareDates(date1,dateformat1,date2,dateformat2) {
   
	var d1=getDateFromFormat(date1,dateformat1);
	var d2=getDateFromFormat(date2,dateformat2);	
	if (d1==0 || d2==0) {
		return -1;
		}
	else if (d1 > d2) {
		return 1;
		}
	return 0;
	}

// ------------------------------------------------------------------
// Utility functions for parsing in getDateFromFormat()
// ------------------------------------------------------------------
function _isInteger(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
function _getInt(str,i,minlength,maxlength) {
	for (var x=maxlength; x>=minlength; x--) {
		var token=str.substring(i,i+x);
		if (token.length < minlength) { return null; }
		if (_isInteger(token)) { return token; }
		}
	return null;
	}
	
// ------------------------------------------------------------------
// getDateFromFormat( date_string , format_string )
//
// This function takes a date string and a format string. It matches
// If the date string matches the format string, it returns the 
// getTime() of the date. If it does not match, it returns 0.
// ------------------------------------------------------------------
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();
	}
			
 function confirmDelete(TargetBaseControl, chkname)
 {
    var elements =  TargetBaseControl.getElementsByTagName("input");
    var objchk = new Array();
    var l =0;  
    var m =0;  
    
    //To find Checkbox Controls inside GridView Control
    for(var j=0; j<elements.length; ++j)
    { 
        if(elements[j].type == "checkbox")
        {
            if(IsMatch(elements[j].id, chkname))
            {
                objchk[l] = elements[j].id;
                l++;
            }
        }
    }
    //End
   
    for(var i=0; i<objchk.length; i++)
    {
        if(document.getElementById(objchk[i]).checked)
        {
            m++;
        }
    }
    
    return m
 }
 
function IsMatch(id, gridname)
{
    var pattern = gridname;
    var regularExpresssion = new RegExp(pattern);
    
    if(id.match(regularExpresssion)) 
        return true;
    else 
        return false;
}