var prev = 0;
var noop = Function.prototype;
function clearIntervals(){
  var tmp, i;
  tmp = i = setInterval(noop);
  while (prev < i) clearInterval(i--);
  prev = tmp;
};
function clearTimeouts(){
  var tmp, i;
  tmp = i = setTimeout(noop);
  while (prev < i) clearTimeout(i--);
  prev = tmp;
};