webdiversity - 9:37 pm on Nov 25, 2005 (gmt 0)

It can either be built into an API or you can use macros.

Frankly though it does far more harm to daypart Google than it would to leave it on all the time. Imagine it being like a queue at an all you can eat buffet. If you decide not to queue any more (i.e. switch off) then you have to get back in the queue and watch while others fill themselves.