/**
 * DHTML date validation script. 
 */

// Declaring valid date character, minimum year and maximum year


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 strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
		if (dtStr.length!=10)
		{
		alert("The date format should be : dd/mm/yyyy")
			return false
		}
	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 : dd/mm/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 day")
		return false
	}

	if (strYear.length != 4 || year==0){
		alert("Please enter a valid 4 digit year")
		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 ValidateDate(obj){
                 
	 if (isDate(obj.value)==false){
	    obj.value="";
           obj.focus();	              
	    return false;
	}
    return true;
 }



//FUNCTION USED TO COMPAIR TWO DATES
function compareTwoDate(first, last)
{
	var fst = first;
	var lst = last;
        if(fst=="" || lst=="")
          return true;        

	var fst_dt = new Array();
	var lst_dt = new Array();
	var search_op = '/';

	fst_dt = fst.split(search_op);
	lst_dt = lst.split(search_op);

	first_dt = new Date();
	last_dt = new Date();

	first_dt.setDate(parseInt(fst_dt[0],10));
	first_dt.setMonth(parseInt(fst_dt[1],10)-1);
	first_dt.setYear(parseInt(fst_dt[2],10));

	last_dt.setDate(parseInt(lst_dt[0],10));
	last_dt.setMonth(parseInt(lst_dt[1],10)-1);
	last_dt.setYear(parseInt(lst_dt[2],10));

	if((first_dt - last_dt)>0)
			return false;
	else
		return true;
}


//function used to get system date
function getSysdate()
{
	var date = new Date();
	return (date.getDate()) + '/' + (date.getMonth() + 1) + '/' +
(date.getYear());
}


//function used for validate amount
function isValidNumber(obj)
{
	var i;
	var str = obj.value;
	var count=false;
    var zeroCheck =  true;
	if(str.length==0)
	{   alert("Amount Should not be blank!");
		if(!obj.disabled) obj.focus();
		return false;
	}

	for(i=0; i<str.length; i++)
	{	
		c = str.charAt(i);
         
		if((c == " "))
		{
			alert("Spaces not allowed");
			if(obj.disabled) obj.focus();
			return false;
		}
        
		if((zeroCheck)&&(c != 0)&&(c != ".")) zeroCheck = false;

		if(((c < "0") || (c > "9")) && (c != ".") && (c != ""))
		{
			alert("Numeric values only in Amount");
			if(!obj.disabled) obj.focus();
			return false;
		}
		if(c == ".")
		{
			if(count){
			   alert("More than one decimal is not allowed");
			   if(!obj.disabled) obj.focus();
			   return false;
			}else count = true;
		}
	}
	
	if(zeroCheck){ alert("Amount should not be zero"); return false; } 
	return true;
}

function isValid_Number(obj)
{
	var i;
	var str = obj.value;
	var count=false;
    var zeroCheck =  true;
	if(str.length==0)
	{   alert("value cannot be blank!");
		if(!obj.disabled) obj.focus();
		return false;
	}

	for(i=0; i<str.length; i++)
	{	
		c = str.charAt(i);
         
		if((c == " "))
		{
			alert("Spaces not allowed");
			if(obj.disabled) obj.focus();
			return false;
		}
        
		if((zeroCheck)&&(c != 0)&&(c != ".")) zeroCheck = false;

		if(((c < "0") || (c > "9")) && (c != ".") && (c != ""))
		{
			alert("Numeric values only (+ve) ");
			if(!obj.disabled) obj.focus();
			return false;
		}
		if(c == ".")
		{
			if(count){
			   alert("More than one decimal is not allowed");
			   if(!obj.disabled) obj.focus();
			   return false;
			}else count = true;
		}
	}
	
	//if(zeroCheck){ alert(" zero Not Allowed!"); return false; } 
	return true;
}
function isNumber(obj)// added by bharat
{
	var i;
	var str = obj.value;
	var count=false;
    var zeroCheck =  true;
	if(str.length==0)
	{   alert("value cannot be blank!");
		if(!obj.disabled) obj.focus();
		return false;
	}

	for(i=0; i<str.length; i++)
	{	
		c = str.charAt(i);
         
		if((c == " "))
		{
			alert("Spaces not allowed");
			if(obj.disabled) obj.focus();
			return false;
		}
        
		if((zeroCheck)&&(c != 0)&&(c != ".")) zeroCheck = false;

		if(((c < "0") || (c > "9")) && (c != ".") && (c != ""))
		{
			alert("Numeric values only ");
			if(!obj.disabled) obj.focus();
			return false;
		}
		if(c == ".")
		{
			if(count){
			   alert("More than one decimal is not allowed");
			   if(!obj.disabled) obj.focus();
			   return false;
			}else count = true;
		}
	}
	
	if(zeroCheck){ alert("Amount should not be zero"); return false; } 
	return true;
}