var stage = acgraph.create("container");
stage.listen("renderstart", function() {
start = (new Date()).getTime();
stage.listenOnce("renderfinish", function() {
finish = (new Date()).getTime();
var labelBg = stage.rect();
label = stage.text(130,130);
label.text((finish - start) + "ms");
var labelBounds = label.getBounds();
.setX((labelBounds.left)-20)
.setY((labelBounds.top)+20)
.setWidth(labelBounds.width+40)
.setHeight(labelBounds.height-40)
for (var i = 0; i < 5000; i++) {
var left = Math.random() * 300;
var qwer = Math.random() * 300;
var rect = stage.rect(left, qwer, rectSide, rectSide);