Contact Form Keeps loading when Send Message is hit

Hello,
I modified the sendemail.php as explained in the documentation. I have added the SMTP server details also. Everytime after filling in the details if I hit the "SEND MESSAGE" button it keeps loading and never stops. And I dont get any error messages too. As mentioned in one of the discussion I changed the $mail->SMTPDebug = 0; still no luck. Could you please look at the following link and let me know whats the issue?
www.game-techie.com (Please click the Contact Us page and enter the information and hit Send message).
Thanks

Sorry my bad. The SMTP settings provided by my domain has errors. I corrected them and it sends the email fine now.