Those graphs performance graphs per browser are very confusing. I'm guessing that the individual colors show the time taken per browser, but the fact that it's

Those graphs performance graphs per browser are very confusing. I'm guessing that the individual colors show the time taken per browser, but the fact that it's stacked makes me think that the slowest ones are on top and the fastest ones are on bottom, but that can't be right since IE6 is always second from the bottom.