start time is one of unload or click time
start time is one of unload or click time

We set the unload time and the click time in the cookie, and when
use the best one as the load start time.  unload is preferred,
click is used if it's unavailable (Opera only)

levexis/boomerang,FredXue/boomerang,sdgdsffdsfff/boomerang,FredXue/boomerang,levexis/boomerang,sdgdsffdsfff/boomerang,lognormal/boomerang,lognormal/boomerang,forcedotcom/kylie,forcedotcom/kylie