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