function sleep(milliseconds) {
	var start = new Date().getTime();

	for (var i = 0; i < 1e7; i++) {
		if ((new Date().getTime()) - start > milliseconds){
			break;
		}
	}
}
onmessage = function(e) {
  console.log('Message received from main script');
  console.log("Sleeping for +"e*2000/1000+" seconds");
 sleep((1+e)*2000);
  postMessage("woot");
}