t5: turning off logging for jetty

Hi,

Sorry if this is not T5 related, just looking for a quick solution. when testing t5 app in jetty, the logs shows a lot of http requests like:
127.0.0.1 -  -  [29/Jun/2009:00:59:30 +0000] "GET /assets/ctx/3ebed60239...
is there a way to turn this off? Thanks,

Angelo