function validateFBFormOnSubmit(form_field)
{		
        
    var regExp_name = /^[A-Za-z][A-Za-z\s'-]{2,40}$/;
    var regExp_comment = /^[\w\W\s]{5,10000}$/;
    var regExp_email = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

    if (!regExp_name.test(form_field.fb_name.value))
    {
        alert("Please enter your 'Name'\n\nOnly the following characters are allowed [A-Z, a-z, ', -]\nYour 'Name' must be between 2 and 40 characters long")
        form_field.fb_name.focus()
        form_field.fb_name.select()
        return false
    }

    if (!regExp_email.test(form_field.fb_email.value))
    {
        alert("Please enter your 'Email Address'\n\nYour 'Email Address' must contain the following characters:-  . @")
        form_field.fb_email.focus()
        form_field.fb_email.select()
        return false
    }

    if (!regExp_comment.test(form_field.fb_comment.value))
    {
        alert("Please enter your 'Comment'\n\nYour 'Comment' must be between 5 and 10000 characters long")
        form_field.fb_comment.focus()
        form_field.fb_comment.select()
        return false
    }
    
    function trim(stringToTrim)
    {
        return stringToTrim.replace(/^\s+|\s+$/g,"");
    }



    return true;

}