xss filter to protect from xss attacks

I have created a xss filter to protect from xss attacks. Though i have filtered only for 8 characters but i was able to test against all the attacks mentioned in the RSnake's cheat sheet. Appscan was not able to detect any xss attacks on it. I request the application security community to help test this filter. 90% i am sure that you wont be able to perform any xss attack on it, the rest 10% i will find out after the feedback from the community. For the curious mind, it is written in java

In case if you are successful in performing xss attack, please do reply to this email with your name, browser and the xss attack string.

url - http://www.attacklabs.com/xssfilter/

I appreciate your time and effort. Thanks a lot in advance