//DATE VALIDATION

function validateFromMonth()
 {
 if(numberOnly(document.getElementById("frommonth").value))
 {
 if(document.getElementById("frommonth").value < 1 || document.getElementById("frommonth").value > 12)
   {
	alert("Please enter a valid month");
	document.getElementById("frommonth").value='MM';
	document.getElementById("frommonth").focus();
   }
   if(document.getElementById("frommonth").value > 0 || document.getElementById("frommonth").value < 10) {
   	var monthValue = document.getElementById("frommonth").value;
   	if(monthValue.length != 2) {
		alert("Please enter a valid format for month (MM)"); 
		document.getElementById("frommonth").value='MM';  
		document.getElementById("frommonth").focus();	
   	}
   }
 }
 else
 {
 alert("Please enter a valid month");
 document.getElementById("frommonth").value='MM';
 document.getElementById("frommonth").focus();
 }
}
 function validateToMonth()
 {
  if(numberOnly(document.getElementById("Tomonth").value))
 {
  if(document.getElementById("Tomonth").value < 1 || document.getElementById("Tomonth").value > 12)
   {
	alert("Please enter a valid month");
	document.getElementById("Tomonth").value='MM';
	document.getElementById("Tomonth").focus();
   }
   if(document.getElementById("Tomonth").value > 0 || document.getElementById("Tomonth").value < 10) {
   	var monthValue = document.getElementById("Tomonth").value;
   	if(monthValue.length != 2) {
		alert("Please enter a valid format for month (MM)");  
		document.getElementById("Tomonth").value='MM'; 	
		document.getElementById("Tomonth").focus();
   	}
   }
   }else
 {
 alert("Please enter a valid month");
 document.getElementById("Tomonth").value='MM';
 document.getElementById("Tomonth").focus();
 }
}

function validateFromDay()
 {
 if(numberOnly(document.getElementById("fromday").value))
 {
 if(document.getElementById("fromday").value < 1 || document.getElementById("fromday").value > 31)
   {
	alert("Please enter a valid day");
	document.getElementById("fromday").value='DD'
	document.getElementById("fromday").focus();
   }
   if(document.getElementById("fromday").value > 0 || document.getElementById("fromday").value < 10) {
   	var dayValue = document.getElementById("fromday").value;
   	if(dayValue.length != 2) {
		alert("Please enter a valid format for day (DD)");  
		document.getElementById("fromday").value='DD'	
		document.getElementById("fromday").focus();
   	}
   }
   }
   else
 {
  alert("Please enter a valid day");
 document.getElementById("fromday").value='DD';
 document.getElementById("fromday").focus();
 }
}

function validateToDy()
 {
 if(numberOnly(document.getElementById("day2").value))
 {
  if(document.getElementById("day2").value < 1 || document.getElementById("day2").value > 31)
   {
	 alert("Please enter a valid day");
	 document.getElementById("day2").value='DD';
	 document.getElementById("day2").focus();
   }
   if(document.getElementById("day2").value > 0 || document.getElementById("day2").value < 10) {
   	var dayValue = document.getElementById("day2").value;
   	if(dayValue.length != 2) {
		alert("Please enter a valid format for day (DD)");   
		 document.getElementById("day2").value='DD'; 
		 document.getElementById("day2").focus();	
   	}
   }
    }
   else
 {
  alert("Please enter a valid day");
 document.getElementById("day2").value='DD';
 document.getElementById("day2").focus();
 }
}
function validateFromYear()
 {
 var currentDate = new Date();
 var currentYear = currentDate.getFullYear();
 
 if(numberOnly(document.getElementById("fromyear").value))
 {
  if(document.getElementById("fromyear").value < 1900 || document.getElementById("fromyear").value > currentYear)
   {
	 alert("Please enter a year between 1900 and the current year");
	 document.getElementById("fromyear").value='YYYY';
	 document.getElementById("fromyear").focus();
   }
    }
   else
 {
  alert("Please enter a valid year");
 document.getElementById("fromyear").value='YYYY';
 document.getElementById("fromyear").focus();
 }
}
function validateToYear()
 {
 var currentDate = new Date();
 var currentYear = currentDate.getFullYear();
 
  if(numberOnly(document.getElementById("toyear").value))
 {
  if(document.getElementById("toyear").value < 1900 || document.getElementById("toyear").value > currentYear)
   {
	alert("Please enter a year between 1900 and the current year");
	document.getElementById("toyear").value='YYYY';
	document.getElementById("toyear").focus();
   }
    }
   else
 {
 alert("Please enter a valid year");
 document.getElementById("toyear").value='YYYY';
 document.getElementById("toyear").focus();
 }
}

function validateFutureDateForToDate()
{
 var currentDate = new Date();
 var currentYear = currentDate.getFullYear();
 var currentMonth = currentDate.getMonth() + 1;
 var currentDate = currentDate.getDate();
 if((document.getElementById("Tomonth").value != "MM" && document.getElementById("Tomonth").value != "") &&
  (document.getElementById("day2").value != "DD" && document.getElementById("day2").value != "") &&
  (document.getElementById("toyear").value != "YYYY" && document.getElementById("toyear").value != "")) {
  	if(document.getElementById("toyear").value > currentYear) {
  		alert("Please enter a year between 1900 and the current year");
  		document.getElementById("toyear").value = "YYYY";
  		document.getElementById("toyear").focus();
  		if(document.getElementById("Tomonth").value > currentMonth) {
  			alert("Please enter lesser or current month");
  			document.getElementById("Tomonth").value = "MM";
  			document.getElementById("Tomonth").focus();
  			if(document.getElementById("day2").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("day2").value = "DD";
  				document.getElementById("day2").focus();
  			}
  		}	
  	}
  	if(document.getElementById("toyear").value == currentYear) {
  		if(document.getElementById("Tomonth").value > currentMonth) {
  			alert("Please enter lesser or current month");
  			document.getElementById("Tomonth").value = "MM";
			document.getElementById("Tomonth").focus();
  			if(document.getElementById("day2").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("day2").value = "DD";
  				document.getElementById("day2").focus();
  			}
  		}	
  	}
  	if(document.getElementById("toyear").value == currentYear) {
  		if(document.getElementById("Tomonth").value == currentMonth) {
  			if(document.getElementById("day2").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("day2").value = "DD";
  				document.getElementById("day2").focus();
  			}
  		}	
  	}
  }
}

function validateFutureDateForFromDate()
{
 var currentDate = new Date();
 var currentYear = currentDate.getFullYear();
 var currentMonth = currentDate.getMonth() + 1;
 var currentDate = currentDate.getDate();
 if((document.getElementById("frommonth").value != "MM" && document.getElementById("frommonth").value != "") &&
  (document.getElementById("fromday").value != "DD" && document.getElementById("fromday").value != "") &&
  (document.getElementById("fromyear").value != "YYYY" && document.getElementById("fromyear").value != "")) {
  	if(document.getElementById("fromyear").value > currentYear) {
  		alert("Please enter a year between 1900 and the current year");
  		document.getElementById("fromyear").value = "YYYY";
  		document.getElementById("fromyear").focus();
  		if(document.getElementById("frommonth").value > currentMonth) {
  			alert("Please enter lesser or current month");
  			document.getElementById("frommonth").value = "MM";
  			document.getElementById("frommonth").focus();
  			if(document.getElementById("fromday").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("fromday").value = "DD";
  				document.getElementById("fromday").focus();
  			}
  		}	
  	}
  	if(document.getElementById("fromyear").value == currentYear) {
  		if(document.getElementById("frommonth").value > currentMonth) {
  			alert("Please enter lesser or current month");
  			document.getElementById("frommonth").value = "MM";
  			document.getElementById("frommonth").focus();
  			if(document.getElementById("fromday").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("fromday").value = "DD";
  				document.getElementById("fromday").focus();
  			}
  		}	
  	}
  	if(document.getElementById("fromyear").value == currentYear) {
  		if(document.getElementById("frommonth").value == currentMonth) {
  			if(document.getElementById("fromday").value > currentDate) {
  				alert("Please enter lesser or current date");
  				document.getElementById("fromday").value = "DD";
  				document.getElementById("fromday").focus();
  			}
  		}	
  	}
  }
}

// common function for nuber validation

function numberOnly(no)
{
//alert(document.getElementById(no).value);
//var numberDate=document.getElementById(no).value;
if(isNaN(no))
{
return false;
}
else
{
    if(no>0)
    {
	//alert("valid")
	}
	else
	{
	return false;
	}
}
return true;
}
var dateAlertString="";
function validateDates()
{
	 var frm = document.advancedSearchForm;
     frm.beginDate.value = frm.month1.value+"/"+frm.day1.value+"/"+frm.year1.value;
     frm.endDate.value=frm.month2.value+"/"+frm.day2.value+"/"+frm.year2.value;
     if(document.getElementById("frommonth").value !='' && document.getElementById("frommonth").value !='MM' &&
        document.getElementById("fromday").value !='' && document.getElementById("fromday").value !='DD' &&
        document.getElementById("fromyear").value !='' && document.getElementById("fromyear").value !='YYYY')
        {
	 dateAlertString="From";
	 ValidateForm(frm.beginDate.value);
	 
	   }
	
	 if(document.getElementById("searchDate").value =='between')
	 {
	 if(document.getElementById("Tomonth").value !='' && document.getElementById("Tomonth").value !='MM' &&
	   document.getElementById("day2").value !='' && document.getElementById("day2").value !='DD' &&
	   document.getElementById("toyear").value !='' && document.getElementById("toyear").value !='YYYY')
	   {
	   dateAlertString="To";
	 ValidateForm(frm.endDate.value)
	 date1=frm.year1.value+"/"+frm.month1.value+"/"+frm.day1.value;
	 date2=frm.year2.value+"/"+frm.month2.value+"/"+frm.day2.value;
	 if(!compareDate(date2,date1))
	 {
	 frm.year2.value='YYYY';
	 frm.month2.value='MM';
	 frm.day2.value='DD';
	 }
   }
}
}


// Common Function for Date validation

var dtCh= "/";
var minYear=1900;
var todayDate = new Date();
var maxYear=todayDate.getFullYear();

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){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	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 '"+dateAlertString+" day'")
		dateAlertString="";
		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
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

function ValidateForm(dt){
	//var dt=document.frmSample.txtDate
	if (isDate(dt)==false){
		
		return false
	}
    return true
 }
 
//Common Function for  Date Compare 

function compareDate(date2,date1)
{
var myDate1= new Date(date2);
var myDate2 = new Date(date1);
if (myDate1 <= myDate2)
{
alert("To Date Must be greater then From Date");
return false;
} 
return true;
}


// set Date value

function setDateValue()
{
if(document.getElementById("frommonth").value =='MM')
{
document.getElementById("frommonth").value='';
}

if(document.getElementById("fromday").value =='DD')
{
document.getElementById("fromday").value='';
}

if(document.getElementById("fromyear").value =='YYYY')
{
document.getElementById("fromyear").value='';
}

if(document.getElementById("Tomonth").value =='MM')
{
document.getElementById("Tomonth").value='';
}

if(document.getElementById("day2").value =='DD')
{ 
document.getElementById("day2").value='';
}

if(document.getElementById("toyear").value =='YYYY')
{
document.getElementById("toyear").value='';
}

}