Depending on your use case, you may need each select to know the other
select's value. In which case you could use the observe mixin to send both
values when either changes (and an optional context).
http://tapestry-stitch.uklance.cloudbees.net/observedemo
Is it essential to have them in the same zone?
You might get some ideas from here:
T5.4:
http://jumpstart.doublenegative.com.au/jumpstart7/examples/ajax/selectdependency1
T5.3:
http://jumpstart.doublenegative.com.au/jumpstart/examples/ajax/selectdependency1
Geoff
On 19 Sep 2014
