only attach handler to browser specific event
only attach handler to browser specific event

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