Wiring specialists?

Would someone be able to show me whether a four-lamp electronic ballast,
*parallel* rapid start can be wired to support two switches? What I would
like to do is use the one ballast to power two pairs of lamps but be able
to switch each pair on and off independently of the other.

Is it possible? And how?

At my local GE store, one four-lamp electronic ballast costs as much as one
two-lamp electronic ballast. So there is money to be saved but I'd also
like to fiddle with only one ballast if possible. Thanks.

Greg. Tong
San Francisco, CA, USA
gtong at sirius_com

"Every infinity is composed of only two halves."