Just press the flag. Note of caution: as soon as you press the flag, there is nothing you can do. Say goodbye to your sweet tab. The project is also uneditable by me, because of the way I coded it.
Another lagging tool. Always be careful. This didn't seem to use as much resources on the computer (ram, cpu, e.g) but does crash the chrome page (or trigger a page unresponsive timeout). And it was all done with one sprite. (The others don't contribute to the lag and are just for look.)