http://orteil.dashnet.org/cookieclicker/

gistfile1.txt

var t = setInterval(function(){
  var evt = document.createEvent("MouseEvents");
    evt.initMouseEvent("click", true, true, window, 1, 0, 0, 300, 400, false, false, false, false, 0, null);
    document.getElementById('bigCookie').dispatchEvent(evt);
}, 20);

var c = setInterval(function(){
  if (document.getElementById('goldenCookie').style.display !== 'none') {
    console.log("Clicking gold");
    var evt = document.createEvent("MouseEvents");
    evt.initMouseEvent("click", true, true, window, 1, 0, 0, 300, 400, false, false, false, false, 0, null);
    document.getElementById('goldenCookie').dispatchEvent(evt);
  }
}, 500);

just .click()

@bga u ar my hero.