function validateFormOnSubmit(theForm) {
var reason = "";
  
  reason += ValidateFName(theForm.fname);
  reason += ValidateLName(theForm.Lname);
  reason += ValidateAddress1(theForm.address1);
  reason += ValidateCity(theForm.city);
  reason += ValidateState(theForm.state);
  reason += ValidateZip(theForm.zip);
  reason += validatePhone(theForm.phone);
  if (theForm.fax.value != ""){
  	reason += validateFax(theForm.fax);
	}
  if (theForm.mobile.value != ""){
  reason += validateMobile(theForm.mobile);
  	}
  reason += validateEmail(theForm.email);
  reason += validateUsername(theForm.username);
  reason += validatePassword(theForm.password); 
  reason += ValidateQuestions(theForm.Answer1);
  reason += ValidateQuestions(theForm.Answer2);
  reason += ValidateQuestions(theForm.Answer3);
  reason += ValidateQuestions(theForm.Answer4);
  reason += ValidateQuestions(theForm.Answer5);
  //reason += validateConfirmPassword(theForm.password,theForm.Confpass); 
  //reason += FrontPage_Form1_Validator(theForm.course);
  
  //reason += validateEmpty(theForm.from);
   if (reason != "") {
    alert("Some fields need correction:\n" + reason);
	return false;
	}
  
  return true;  
}

function FrontPage_Form1_Validator(fld)
{
var error = "";
  if (fld.selectedIndex == 0)
  {
  	//error= fld.selectedIndex.options[fld.options.selectedIndex].value
    error = "The first \"course\" option is not a valid selection.  Please choose one of the other options.";
    fld.style.background = 'Yellow';     
  }
  else {
  	//error= fld.selectedIndex.value;
    fld.style.background = 'White';
    } 
  return error;
}

function ValidateQuestions(fld)
{
	var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Each question must be answered.\n";
    } else if ((fld.value.length < 4) || (fld.value.length > 40)) {
        fld.style.background = 'Yellow'; 
        error = "Each answer must be at least 5 characters and no more than 40 characters.\n";
    }	else {
        fld.style.background = 'White';
    } 
    return error;
}

function ValidateFName(fld) {
    var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter your first name.\n";
    } 
	else {
        fld.style.background = 'White';
    } 
    return error;
}

function ValidateLName(fld) {
    var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter your last name.\n";
    } 
	else {
        fld.style.background = 'White';
    } 
    return error;
}

function ValidateAddress1(fld) {
    var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter your address.\n";
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function ValidateCity(fld) {
    var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter a city.\n";
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function ValidateState(fld)
{
var error = "";
  if (fld.selectedIndex == 0)
  {
    error = "Please select a state.";
    fld.style.background = 'Yellow';     
  }
  else {
    fld.style.background = 'White';
    } 
  return error;
}

function ValidateZip(fld) { //later, check for 5 digits
    var error = "";
     
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter a zip code.\n";
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function validateEmpty(fld) {
    var error = "";
  
    if (fld.value.length == 0) {
        fld.style.background = 'Yellow'; 
        error = "The required field has not been filled in.\n"
    } else {
        fld.style.background = 'White';
    }
    return error;   
}


function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "Please enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = 'Yellow'; 
        error = "Usernames must be at least 5 characters and no more than 15 characters.\n";
    } else if (illegalChars.test(fld.value)) {
        fld.style.background = 'Yellow'; 
        error = "The username contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function validatePassword(fld) {
    var error = "";
    var illegalChars = /[\W_]/; // allow only letters and numbers 
 
    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "Please enter a password.\n";
    } else if ((fld.value.length < 7) || (fld.value.length > 15)) {
        error = "Your password must be more then 7 characters and less then 15 characters \n";
        fld.style.background = 'Yellow';
    } else if (illegalChars.test(fld.value)) {
        error = "The password contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!((fld.value.search(/(a-z)+/)) && (fld.value.search(/(0-9)+/)))) {
        error = "The password must contain at least one numeral.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
   return error;
}   

function validateConfirmPassword(fld1, fld2) {
    var error = "";
     
    if (fld1.value != fld2.value) {
        error = "Your passwords do not match.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
} 

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
    
    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "Please enter an email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   if (fld.value == "") {
        error = "Please enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "The phone number is the wrong length. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validateFax(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

    if (isNaN(parseInt(stripped))) {
        error = "The fax number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "The fax number is the wrong length. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validateMobile(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

    if (isNaN(parseInt(stripped))) {
        error = "The mobile number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "The mobile number is the wrong length. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
    return error;
}
/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
 
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function validateDate(fld) //later, check that date is in the future
{
	var error = "";
	if (isDate(fld.graddate.value)==false){
		fld.graddate.style.background = 'Yellow';
		//error = "The form must be correctly filled in before your registration can be submitted.\n";
		return false; //?
	} else {
        fld.graddate.style.background = 'White';
    	return true; 
	}
}

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 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
}