var captcha = 99;
var val2;
function send_comment(){
    $("#name_err").html("");
    $("#company_err").html("");
    $("#telephone_err").html("");
    $("#email_err").html("");
    $("#subject_err").html("");
    $("#message_err").html("");
    good=true;
    if(document.getElementById('name_txt').value=='') {
        $("#name_err").html( 'Please enter your name.');
        good=false;
    }
    if(document.getElementById('company_txt').value=='') {
        $("#company_err").html( 'Please enter your company name.');
        good=false;
    }
    if(document.getElementById('telephone_txt').value=='') {
        $("#telephone_err").html( 'Please enter your telephone number.');
        good=false;
    }
    if(document.getElementById('email_txt').value=='') {
        $("#email_err").html( 'Please enter your email address.');
        good=false;
    }
    if(document.getElementById('subject_txt').value=='') {
        $("#subject_err").html('Please fill in the subject field.');
        good=false;
    }
    if(document.getElementById('textarea').value=='') {
        $("#message_err").html('Please enter your message.');
        good=false;
    }
    if(document.getElementById('captcha_answer').value!=captcha) {
        document.getElementById('comment_msg').innerHTML = 'Add the numbers again.';
        good=false;
    }
    if(good==true){
        document.getElementById('comment_msg').innerHTML = 'Thank you for your message!';
        document.getElementById('submit_button').style.display = 'none';
        $.post("comment.php", { name: document.getElementById('name_txt').value, company: document.getElementById('company_txt').value, telephone: document.getElementById('telephone_txt').value, email: document.getElementById('email_txt').value, subject: document.getElementById('subject_txt').value,
        message: document.getElementById('textarea').value, captcha: document.getElementById('captcha_answer').value  } );
    }
}

function get_captcha(){
    $.post("comment.php", {action:'captcha'}, function(data) {
        data = data.split('|');
        val2 = data[0];
        captcha = data[1];
        document.getElementById('captcha').value = captcha+' + '+ val2+ ' = ';
        captcha = captcha *1 + (1 * val2);
    });
}