/*
function sleep(ms) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > ms){
      break;
    }
  }
}
	
setTimeout(function () {
//function cleanDirt() {
	for (i = 0; i < 50; i = i + 4) {
		for (j = 0; j < 50; j = j + 1) {
			image = "dirt-" + j + "-" + i;
//alert(image);
			document.getElementById(image).style.display = "none";
			sleep(10);
		}
	}
}, 1000);

//$(document).ready(cleanDirt);
// window.onload = cleanDirt();
*/