function validateForm(theFrm)
{

	var reason = "";

	//Check required fields
	reason += validateEmpty(theFrm.FirstName);
	reason += validateEmpty(theFrm.LastName);
	reason += validateEmpty(theFrm.Address1);
	reason += validateEmpty(theFrm.City);
	reason += validateEmpty(theFrm.Email);
	reason += validateEmpty(theFrm.ConfirmEmail);
	reason += validateEmpty(theFrm.SiteName);
	reason += validateEmpty(theFrm.SiteURL);
	reason += validateNotSelected(theFrm.Country);
	reason += validateNotSelected(theFrm.SiteLanguage);
	reason += validateNotSelected(theFrm.SiteCountry);
	reason += validateNotSelected(theFrm.ProductLine);
	
	if (reason != "") {
    		alert("Some fields need information:\n" + reason);
    		return false;
  	}

	//Validate data in fields
	reason += validateEmail(theFrm.Email, theFrm.ConfirmEmail);
	

	if (reason != "") {
    		alert("Some fields need correction:\n" + reason);
    		return false;
  	}
	
}

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

function validateNotSelected(fld) {
    var error = "";
 
    if (fld.value == 0||fld.value == '') {
        fld.style.background = 'Yellow'; 
        error = "The required field " + fld.name + " has not been selected.\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 = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = 'Yellow'; 
        error = "The username is the wrong length.\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 = "You didn't enter a password.\n";
    } else if ((fld.value.length < 7) || (fld.value.length > 15)) {
        error = "The password is the wrong length. \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 trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld, fld2) {
    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 = "You didn't 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 if (!fld.value.match(fld2.value)) {
        fld.style.background = 'Yellow';
	fld2.style.background = 'Yellow';
        error = "The email address and confirm email do not match.\n";
    } else {
        fld.style.background = 'White';
	fld2.style.background = 'White';
    }
    return error;
}

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

   if (fld.value == "") {
        error = "You didn't 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';
    }
    return error;
}