// Java Script for Feedback
    
function ValidateFeedback ( txtFirstName, txtSurname, txtEmailAddress, txtPhoneNumber, txtComments )
{
    if ( ValidateTextBoxNull ( txtFirstName, 'First Name', 50 ) == false )
        return false; 
    else if ( ValidateTextBoxNull ( txtSurname, 'Surname', 50 ) == false )
        return false;
    else if ( ValidateTextBoxNull ( txtEmailAddress, 'Email Address', 255 ) == false )
        return false;
    else if ( ValidateTextBoxFieldEmailId ( txtEmailAddress, 'E-mail Address' ) == false )
        return false ;
    else if ( ValidateTextBoxNull ( txtPhoneNumber, 'Phone Number', 50 ) == false )
        return false;
    else if ( ValidateTextBoxNull ( txtComments, 'Comments', 50 ) == false )
        return false;
    else
        return true;
}