function valid_Customer(ddlusertype, txtSellerName, txtLastName, txtEmail,txtCEmail, txtAddress1, txtCity, txtState, txtZip, txtPhoneNo, txtpassword, txtcpassword) {
    
    if (emptyField(txtSellerName)) {
        alert('Please enter first name');
        txtSellerName.focus();
        return false;
    }
    if (emptyField(txtLastName)) {
        alert('Please enter lastname');
        txtLastName.focus();
        return false;
    }
        
    if (emptyField(txtAddress1)) {
        alert('Please enter address.');
        txtAddress1.focus();
        return false;
    }
    if (ddlusertype.value == 0) {
        alert('Please select Country.');
        ddlusertype.focus();
        return false;
    }
    if (emptyField(txtState)) {
        alert('Please enter state.');
        txtState.focus();
        return false;
    }
    if (emptyField(txtCity)) {
        alert('Please enter city.');
        txtCity.focus();
        return false;
    }
    if (emptyField(txtZip)) {
        alert('Please enter zip.');
        txtZip.focus();
        return false;
    }    
    if (emptyField(txtPhoneNo)) {
        alert('Please enter Telephone no.');
        txtPhoneNo.focus();
        return false;
    }
    if (emptyField(txtEmail)) {
        alert('Please enter email (username)');
        txtEmail.focus();
        return false;
    }
    if (!validEmailId(txtEmail.value)) {
        alert('Please enter valid email');
        txtEmail.focus();
        return false;
    }
    if (emptyField(txtCEmail)) {
        alert('Please enter confirm email');
        txtCEmail.focus();
        return false;
    }
    if (!validEmailId(txtCEmail.value)) {
        alert('Please enter valid confirm email');
        txtCEmail.focus();
        return false;
    }
    if (txtEmail.value != txtCEmail.value) {
        alert('Email and confirm email are not same.');
        txtcpassword.focus();
        txtcpassword.select();
        return false;
    }
    if (emptyField(txtpassword)) {
        alert('Please enter password');
        txtpassword.focus();
        return false;
    }
    if (txtpassword.value.length < 6) {
        alert('Password must be at least 6 characters.');
        txtpassword.focus();
        return false;
    }
    if (!emptyField(txtpassword)) {
        if (emptyField(txtcpassword)) {
            alert('Please enter retype password');
            txtcpassword.focus();
            txtcpassword.select();
            return false;
        }
        if (txtpassword.value != txtcpassword.value) {
            alert('Password and retype password are not same.');
            txtcpassword.focus();
            txtcpassword.select();
            return false;
        }
    }

    //return true;

}