function validateEmpty(fld, lbl, discardString) {
    var error = "";
 
    if (fld.value.length == 0 || fld.value == discardString) {
        setErrorStyle(fld);
        error = "Enter your " + lbl;        
    } else {
        setDefaultStyle(fld);
    }
    return error;  
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        setErrorStyle(fld);
        error = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        setErrorStyle(fld);
        error = "The username is the wrong length.\n";
    } else if (illegalChars.test(fld.value)) {
        setErrorStyle(fld); 
        error = "The username contains illegal characters.\n";
    } else {
        setDefaultStyle(fld);
    }
    return error;
}

function validatePassword(fld) {
    var error = "";
    //var illegalChars = /[\W_]/; // allow only letters and numbers 
    var illegalChars = /[ ]/; // allow only letters and numbers 
 
    if (fld.value == "") {
        setErrorStyle(fld);
        error = "Enter a Password.\n";
    } else if ((fld.value.length < 6) || (fld.value.length > 15)) {
        error = "Password has to be atleast 6chars and atmost 15chars.";
        setErrorStyle(fld);
    } else if (illegalChars.test(fld.value)) {
        error = "Password contains illegal characters.";
        setErrorStyle(fld);
    /*} else if (!((fld.value.search(/(a-z)+/)) && (fld.value.search(/(0-9)+/)))) {
        error = "Password must contain at least one Numeral.";
        setErrorStyle(fld);*/
    } else {
        setDefaultStyle(fld);
    }
   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 == "") {
        setErrorStyle(fld);
        error = "Enter an email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        setErrorStyle(fld);
        error = "Email address is Invalid.\n";
    } else if (fld.value.match(illegalChars)) {
        setErrorStyle(fld);
        error = "Email address contains illegal characters.";
    } else {
        setDefaultStyle(fld);
    }
    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";
        setErrorStyle(fld);
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        setErrorStyle(fld);
    } else if (!(stripped.length == 10)) {
        error = "The phone number is the wrong length. Make sure you included an area code.\n";
        setErrorStyle(fld);
    }
    return error;
}

function validateConfirmPassword(fldConfirmPass, fldPass) {
    var error = "";
 
    if (fldConfirmPass.value != fldPass.value) {
        setErrorStyle(fldConfirmPass);
        error = "Reconfirm your password.";
    } else {
        setDefaultStyle(fldConfirmPass);
    }
   return error;
}

function setErrorStyle(formField)
{
	formField.style.borderColor = "#ff0000";
}

function setDefaultStyle(formField)
{
	formField.style.borderColor = "#999999";
}