소스질문

★이소스가 어떤걸 뜻하는지 대충이라도 아시는분 답변좀 ㅠㅠ★

  (function(){     var a = function() {try{return !!window.addEventListener} catch(e) {return !1} },     b = function(b, c) {a() ? document.addEventListener("DOMContentLoaded", b, c) : document.attachEvent("onreadystatechange", b)};     b(function(){       var a = document.getElementById('cf-content');a.style.display = 'block';       setTimeout(function(){         var t,r,a,f, GgoEQJP={"m":+((!+[]+!![]+[])+(!+[]+!![]+!![]+!![]))};         t = document.createElement('div');         t.innerHTML="x";         t = t.firstChild.href;r = t.match(/https?:\/\//)[0];         t = t.substr(r.length); t = t.substr(0,t.length-1);         a = document.getElementById('jschl-answer');         f = document.getElementById('challenge-form');         ;GgoEQJP.m*=+((!+[]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]));a.value = parseInt(GgoEQJP.m, 10) + t.length;         f.submit();       }, 5850);     }, false);​

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아래 소스가 어떤건지 대충이라도 좀아시는분  답변좀 ㅠㅠ