// This set of function are general includes for validation
// They are designed in pairs the validation and the event function
// the event function will call the validation with the event src

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

//----------------------------------------------------------------------------------------
	//HARSHAL ADDED THIS ON 27-04-2006
	function jsTrim(strInput)
	{
		var strResult;
		var objRegex = new RegExp("(^\\s+)|(\\s+$)");
		strResult = strInput.replace(objRegex, "");
		return(strResult);
	};
//----------------------------------------------------------------------------------------

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 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
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}


function es_valid_date() {
	var item = event.srcElement;
	event.returnValue = vs_valid_date(item);
}
function vs_valid_date(item) {
	if (isDate(item.value)==false){
		item.focus()
		return false
	}
    return true
 }

function GetMonthNo(Mon)
{
	var MonthNo
	if (Mon=="Jan")
	{
		MonthNo="1"
	}
	if (Mon=="Feb")
	{
		MonthNo="2"
	}
	if (Mon=="Mar")
	{
		MonthNo="3"
	}
	if (Mon=="Apr")
	{
		MonthNo="4"
	}
	if (Mon=="May")
	{
		MonthNo="5"
	}
	if (Mon=="Jun")
	{
		MonthNo="6"
	}
	if (Mon=="Jul")
	{
		MonthNo="7"
	}
	if (Mon=="Aug")
	{
		MonthNo="8"
	}
	if (Mon=="Sep")
	{
		MonthNo="9"
	}
	if (Mon=="Oct")
	{
		MonthNo="10"
	}
	if (Mon=="Nov")
	{
		MonthNo="11"
	}
	if (Mon=="Dec")
	{
		MonthNo="12"
	}
	
	return MonthNo
}
	

//Validating the Date Selected
function ChkMonthDays(MonIndex,SelDay,SelYear)
{
	if(MonIndex==4 || MonIndex==6 || MonIndex==9 || MonIndex==11)
	{
		if(parseInt(SelDay)==31)
		{
			return false;
		}
	} 
	if(MonIndex==2)	//For Feb.
	{
		if((parseInt(SelYear) % 4)!=0)
		{
			if(parseInt(SelDay)>28)
			{
				return false;
			}
		}
		else if((parseInt(SelYear) % 400)==0)
		{
			if(parseInt(SelDay)>29)
			{
				return false;
			}
		}
		else if((parseInt(SelYear) % 100)==0)
		{
			if(parseInt(SelDay)>28)
			{
				return false;
			}
		}
		else
		{
			if(parseInt(SelDay)>29)
			{
				return false;
			}
		}
	}
}

function checkdate(VDate,VMonth,VYear,NoLessThanToday,NoGreaterThanToday)
{
	VisitDate=VDate + VMonth + VYear
	
	if(VDate=="" || VMonth=="" || VYear=="")
	{
		alert("Please select a valid Date !")
		return false;
	}
	
	var dt=new Date()
	
	RetVal=ChkMonthDays(VMonth,VDate,VYear)
	if(RetVal==false)
	{
		alert("Invalid Date Selected !");
		return false;
	}

	if (NoLessThanToday=="Yes"){
		var curyear=(dt.getYear())
		var curdate=(dt.getDate())
		var curmonth=(dt.getMonth()+1)
	
		if(parseInt(VYear)>parseInt(curyear))
		{
			alert("Future dates not allowed !")
			return false;
		}
		if(parseInt(curyear)==parseInt(VYear))
		{
			if(parseInt(VMonth)>parseInt(curmonth))
			{
				alert("Future dates not allowed !")
				return false;
			}
			if(parseInt(curmonth)==parseInt(VMonth))
			{
				if(parseInt(VDate)>parseInt(curdate))
				{
					alert("Future dates not allowed !")
					return false;
				}
			}
		}
		
	}	
	if (NoGreaterThanToday=="Yes"){
		var curyear=(dt.getYear())
		var curdate=(dt.getDate())
		var curmonth=(dt.getMonth()+1)
	
		if(parseInt(VYear)<parseInt(curyear))
		{
			alert("Back dates not allowed !")
			return false;
		}
		if(parseInt(curyear)==parseInt(VYear))
		{
			if(parseInt(VMonth)<parseInt(curmonth))
			{
				alert("Back dates not allowed !")
				return false;
			}
			if(parseInt(curmonth)==parseInt(VMonth))
			{
				if(parseInt(VDate)<parseInt(curdate))
				{
					alert("Back dates not allowed !")
					return false;
				}
			}
		}
		
	}	
    return true;
}

function display_name(item) {
	var strDisplay = item.getAttribute("DisplayName");
	if (strDisplay==null || strDisplay=="")
		strDisplay="Field";
	return strDisplay;
}

function default_value(item) {
	var strDefault = item.defaultValue;
	if (strDefault==null || strDefault=="")
		strDefault="";
	return strDefault;
}

function trim_string() {
	var ichar, icount;
	var strValue = this;
	ichar = strValue.length - 1;
	icount = -1;
	while (strValue.charAt(ichar)==' ' && ichar > icount)
		--ichar;
	if (ichar!=(strValue.length-1))
		strValue = strValue.slice(0,ichar+1);
	ichar = 0;
	icount = strValue.length - 1;
	while (strValue.charAt(ichar)==' ' && ichar < icount)
		++ichar;
	if (ichar!=0)
		strValue = strValue.slice(ichar,strValue.length);
	return strValue;
}

function date_toSimpleForm() {
	var toSimpleForm = new String;
	toSimpleForm = this.toLocaleString();
	toSimpleForm = toSimpleForm.substring(0,toSimpleForm.indexOf(' '));
	return toSimpleForm;
}


function es_non_blank() {
	var item = event.srcElement;
	event.returnValue = vs_non_blank(item);
}

function vs_non_blank(item) {
	
	var strErrorMsg = display_name(item) + " is compulsory.";
	item.value=item.value.Trim();
	//------------------------------------------------------------------------------------------
		//HARSHAL ADDED THIS ON 27-04-2006
		item.value = jsTrim(item.value);	
	//------------------------------------------------------------------------------------------
	if (item.value.length==0) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_non_zero() {
	var item = event.srcElement;
	event.returnValue = vs_non_blank(item);
}

function vs_non_zero(item) {
	var strErrorMsg = display_name(item) + " is compulsory.";
	item.value=item.value.Trim();
	if (item.value==0) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_valid_number() {
	var item = event.srcElement;
	event.returnValue = vs_valid_number(item);
}
function vs_valid_number(item) {
	var strErrorMsg = display_name(item) + " must be a valid number";
	var strDefault = default_value(item);
	if (strDefault.length==0) {
		strDefault="0";
	}
	item.value=item.value.Trim();
	if (item.value.length==0)
		item.value=strDefault;
	var num = ".0123456789";
	for (var intLoop = 0; intLoop < item.value.length; intLoop++) {
		if (num.indexOf(item.value.charAt(intLoop)) == -1) {
			item.focus();
			alert(strErrorMsg);
			return false;
		}
	}
	if (item.value.indexOf(".")!=item.value.lastIndexOf(".")) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_item_selected() {
	var item = event.srcElement;
	event.returnValue = vs_item_selected(item);
}
function vs_item_selected(item) {
	var strErrorMsg = display_name(item) + " must be a valid selection";
	if (item.selectedIndex==0) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}


function es_valid_email() {
	var item = event.srcElement.value;
	event.returnValue = vs_valid_email(item);
}

function vs_valid_email(item) {
	var strErrorMsg = display_name(item) + " is not a valid Email";
	item.value=item.value.Trim();
	if (!(/^[0-9a-zA-Z][\w\.\-\_]*[a-zA-Z0-9]@[a-zA-Z][\w\.\-\_]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/.test(item.value))){
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

// build the validation object
function validation_setup() {
	this.eventNonBlank = es_non_blank;
	this.nonBlank = vs_non_blank;
	this.eventValidNumber = es_valid_number;
	this.validNumber = vs_valid_number;
	this.validInteger = vs_valid_integer;
	this.eventNonZero = es_non_zero;
	this.nonZero = vs_non_zero;
	this.eventItemSelected = es_item_selected;
	this.itemSelected = vs_item_selected;
	this.eventValidEmail = es_valid_email;
	this.validEmail = vs_valid_email;
	this.eventValidDate = es_valid_date;
	this.validDate = vs_valid_date;
	return this;
}

// Extend the string object to include a trim function
String.prototype.Trim = trim_string;
// Extend the date object to include a simple form string conversion
Date.prototype.toSimpleForm = date_toSimpleForm;

// Construct the validation object
var validation = new Object;
validation = validation_setup();


// This set of function are for processing the key press event
// Used to restrict input on numerics and pure textual fields

function kp_integer() {
	if ((event.keyCode < 48 || event.keyCode > 57))
		event.returnValue = false;
}
function kp_numeric() {
	if ((event.keyCode != 46) && (event.keyCode < 48 || event.keyCode > 57))
		event.returnValue = false;
	if (event.keyCode == 46) {
		if (event.srcElement.value.indexOf(".") > -1)
			event.returnValue = false;
	}
}


function kp_character() {
	if ((event.keyCode < 65 || event.keyCode > 90) && (event.keyCode < 97 || event.keyCode > 122))
		event.returnValue = false;
}
function kp_convert_upper() {
	if ((event.keyCode >= 97 && event.keyCode <= 122))
		event.keyCode -= 32;
}
function kp_convert_lower() {
	if ((event.keyCode >= 65 && event.keyCode <= 90))
		event.keyCode += 32;
}


function kp_setup() {
	this.Integer = kp_integer;
	this.Numeric = kp_numeric;
	this.Character = kp_character;
	this.ConvertUpper = kp_convert_upper;
	this.ConvertLower = kp_convert_lower;
	return this;
}

function CheckDate(VDate,VMonth,VYear,CompareToday,noCompareToday)
{
	VisitDate=VDate + VMonth + VYear
	
	if(VDate=="" || VMonth=="" || VYear=="")
	{
		alert("Please select a valid Date!")
		return false;
	}
	
	var dt=new Date()
	
	RetVal=ChkMonthDays(VMonth,VDate,VYear)
	if(RetVal==false)
	{
		alert("Invalid Date Selected!");
		return false;
	}

	if (CompareToday=="Yes"){
		var curyear=(dt.getYear())
		var curdate=(dt.getDate())
		var curmonth=(dt.getMonth()+1)
	
		if(parseInt(VYear)<parseInt(curyear))
		{
			alert("Past dates not allowed!")
			return false;
		}
		if(parseInt(curyear)==parseInt(VYear))
		{
			if(parseInt(VMonth)<parseInt(curmonth))
			{
				alert("Past dates not allowed!")
				return false;
			}
			if(parseInt(curmonth)==parseInt(VMonth))
			{
				if(parseInt(VDate)<parseInt(curdate))
				{
					alert("Past dates not allowed!")
					return false;
				}
			}
		}
		
	}
	
	if (noCompareToday=="Yes"){
		var curyear=(dt.getYear())
		var curdate=(dt.getDate())
		var curmonth=(dt.getMonth()+1)
	
		if(parseInt(VYear)>parseInt(curyear))
		{
			alert("Future dates not allowed!")
			return false;
		}
		if(parseInt(curyear)==parseInt(VYear))
		{
			if(parseInt(VMonth)>parseInt(curmonth))
			{
				alert("Future dates not allowed!")
				return false;
			}
			if(parseInt(curmonth)==parseInt(VMonth))
			{
				if(parseInt(VDate)>parseInt(curdate))
				{
					alert("Future dates not allowed!")
					return false;
				}
			}
		}
		
	}

    return true;	
}

function es_valid_integer() {
	var item = event.srcElement;
	event.returnValue = vs_valid_integer(item);
}
function vs_valid_integer(item) {
	var strErrorMsg = display_name(item) + " must be a valid integer & can not accept decimal values";
	var strDefault = default_value(item);
	if (strDefault.length==0) {
		strDefault="0";
	}
	item.value=item.value.Trim();
	if (item.value.length==0)
		item.value=strDefault;
	var num = "0123456789";
	for (var intLoop = 0; intLoop < item.value.length; intLoop++) {
		if (num.indexOf(item.value.charAt(intLoop)) == -1) {
			item.focus();
			alert(strErrorMsg);
			return false;
		}
	}
	if (item.value.indexOf(".")!=item.value.lastIndexOf(".")) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

var keyPressInput = new Object;
keyPressInput = kp_setup();