var patternValidChars = /^([^!<>])+$/;
var patternOptionalValidChars = /^([^!<>])*$/;
var patternValidEmail =  /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;//--/\w+\.?\w*\@\w+\.\w+(?:\.\w+)*$/;
var patternValidNumber = /^[0-9.]+$/;
var patternOptionalValidNumber = /^[0-9.]*$/;
var patternValidCurrency = /^(\d+|(\d{1,3}(\,\d{1,3})*))(\.\d{1,2})?$/;
var patternOptionalValidCurrency = /^(\d+|(\d{1,3}(\,\d{1,3})*))?(\.\d{1,2})?$/;
var patternValidZip = /^[0-9\s]+$/;
var patternPhoneNumber = /^\([0-9]+\)\s?[0-9]+\-{1}[0-9]+$/;
var patternPhoneAreaCode = /^[0-9]{3}$/;
var patternPhonePart1 = /^[0-9]{3}$/;
var patternPhonePart2 = /^[0-9]{4}$/;
var patternOptionalPhoneNumber = /^(\([0-9]+\)\s?[0-9]+\-{1}[0-9]+)?$/;
var patternCFDANumber = /^[0-9]{2}\.[a-zA-Z0-9]{3,4}$/;
//var patternValidURL = /^(http\:\/\/(\w+\.)+\w+(\/\w+)*(\.\w+)?)?$/;
var patternValidURL = /^((http|https)\:\/\/(\w+\.)+\w+(\/\w+)*(\.[\w\?\_\-\=\d\&]+)?)?$/;
var patternValidGrantID = /^GD[0-9]+$/
var patternValidPassword = /^[^&!<>]{6,8}$/;
var patternValidDate = /^[0-9]{1,2}\/[0-9]{1,2}\/[0-9]{4}$/;



function ValidateInputField(FieldName, FieldValue, Pattern)
{
	var re;
	var result = false;

	re = new RegExp(Pattern);
	result = re.test(FieldValue);

	return result;
}

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


function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
   
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var 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){
	
    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 in the Date Field")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day in the Date Field")
		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 in the Date Field")
		return false
	}
return true
}

function ValidateForm(){



	var dt=document.FORM1.MONTH.value +"/" +document.FORM1.DAY.value +"/"+document.FORM1.YEARS.value

	Main(dt);
	
	dt=document.FORM1.MONTH1.value +"/" +document.FORM1.DAY1.value +"/"+document.FORM1.YEARS1.value

	Main(dt);
	
 }
 
 function Main(dt)
 {
 
		if (isDate(dt)==false)
		{
	
		//dt.focus()
		return false
		}
    return true
 }