Help with http://xss-quiz.int21h.jp

["Vin Oxious" <vinoxious () gmail com>]

Hello Friends,

                      I need help with the site :
http://xss-quiz.int21h.jp based on XSS Challenge.. I am not able to
figure out how to proceed any further at the stage :

http://xss-quiz.int21h.jp/stage008.php?sid=c7bd38c2914d016b2be6c9adb9ef64b671d57e75

If help would be appreciated

thanks and regards
Vinox