function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||trim(value)=="")
  {alert(alerttxt);return false;}
else {return true}
}
}

function text_length_alertmessage(txtlength,txtlengthmax)
{
	// Build alert box message showing how many characters entered
	mesg = "You have entered " + txtlength + " character(s)\n"
	mesg = mesg + "Valid entries are less than "+txtlengthmax+" characters.\n"
	mesg = mesg + "Please verify your input and submit again."
	alert(mesg);
	// Place the cursor on the field for revision
	return (false);
}

function validate_text_length(field,maxlength)
{
with (field)
{
	if (value.length > maxlength)
	{
		text_length_alertmessage(value.length,maxlength)
		return (false);
	}
	return (true);
}
}


function validate_form(thisform)
{
with (thisform)
{

//NEW
//Validate impact & innovation check boxes and text
if(document.ProjectProfileForm.chkBoth.checked==true)
{
	document.ProjectProfileForm.chkInnovation.checked=true;
	document.ProjectProfileForm.chkImpact.checked=true;
}
if(document.ProjectProfileForm.chkInnovation.checked==true && document.ProjectProfileForm.chkImpact.checked==true)
{
	document.ProjectProfileForm.chkBoth.checked=true;
}
if(document.ProjectProfileForm.chkInnovation.checked==true && 
	validate_required(txtInnovation,"If you are reporting this project for its innovation, you should fill Innovation section")==false)
{
	chkInnovation.focus();
	return false;
}
if(document.ProjectProfileForm.chkImpact.checked==true && 
	validate_required(txtImpact,"If you are reporting this project for its impact, you should fill Impact section")==false)
{
	chkInnovation.focus();
	return false;
}

if(validate_text_length(txtDescOfProject,5000)==false){txtDescOfProject.focus();return (false);}
if(validate_text_length(txtBenToBorrower,2500)==false){txtBenToBorrower.focus();return (false);}
if(validate_text_length(txtTargetMarket,2500)==false){txtTargetMarket.focus();return (false);}
if(validate_text_length(txtInnovation,5000)==false){txtInnovation.focus();return (false);}
if(validate_text_length(txtImpact,5000)==false){txtImpact.focus();return (false);}
if(validate_text_length(txtSupplementalComments,2500)==false){txtSupplementalComments.focus();return (false);}

//VALIDATE - REQUESTOR INFORMATION
if (validate_required(txtAwardeeName,"Please enter an Awardee Name")==false){txtAwardeeName.focus();return false;} else
if (validate_required(txtAwardeeAddressLine1,"Please enter the Awardee Address")==false){txtAwardeeAddressLine1.focus();return false;} else
if (validate_required(txtAwardeeCity,"Please enter the Awardee City")==false){txtAwardeeCity.focus();return false;} else
if (validate_required(txtAwardeeState,"Please enter the Awardee State")==false){txtAwardeeState.focus();return false;} else
if (validate_required(txtAwardeeZipCode,"Please enter the Awardee Zip Code")==false){txtAwardeeZipCode.focus();return false;} else
if (validate_required(txtContactName,"Please enter a Contact name")==false){txtContactName.focus();return false;} else
if (validate_required(txtContactTitle,"Please enter a Contact Title")==false){txtContactTitle.focus();return false;} else
if (validate_required(txtContactPhone,"Please enter a Contact Phone Number")==false){txtContactPhone.focus();return false;} else
if (checkInternationalPhone(txtContactPhone.value)==false){alert("Please Enter a Valid Work Phone Number");txtContactPhone.value="";txtContactPhone.focus();return false;} else
if (validate_required(txtContactEmail,"Please enter a Contact Email Address")==false){txtContactEmail.focus();return false;} else
if (echeck(txtContactEmail.value)==false){txtContactEmail.focus();return false;}

}
}

//PHONE NUMBER VALIDATION CHECKER
//NOTE THIS USES SOME FUNCTIONS IN THE DATE VALIDATION CHECKER BELOW
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
    var bracket=3
        strPhone=trim(strPhone)
    if(strPhone.indexOf("+")>1) return false
    if(strPhone.indexOf("-")!=-1)bracket=bracket+1
    if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
    var brchr=strPhone.indexOf("(")
    if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
    if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
        s=stripCharsInBag(strPhone,validWorldPhoneChars);
    return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

//EMAIL VALIDATION CHECKER
function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

 		 //return true					
	}

// DATE VALIDATION CHECKER
// 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 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
}