[G4] Connect one monitor and two macs??

[james grant tyner]

Greetings to the list.
I have a G4 and a 6100(G3) as a mini-LAN(ethernet).
Both computers had CRT-monitors. Now the 'Mac Color Display' for the
6100 has bit the dust.
Question: Does anyone know of a simple means to connect both computers
to the same monitor?
My alternative is also simple- buying the cheapest little replacement
monitor available.
Thanks for any suggestions.
Jim Tyner