understanding reRender IDs - client id?

[javatwo]

For reRender="Id1, Id2", the IDs must be client ID, or can be under a naming container such as <f:subview>, for example,

<f:subview id="FOO">

<h:panelGroup id="Id1">
...
</h:panelGroup>

<h:panelGroup id="Id2">
...
</h:panelGroup>

<a4j:commandButton value="submit" reRender="Id1,Id2" />
</f:subview>

The client IDs for the two panelGroups are FOO:Id1, FOO:Id2.

Can Ajax4JSF find the two panels to update on client?
Thanks!

[sergeysmirnov]

it should work both ways - "Id1, Id2" and ":FOO:Id1, :FOO:Id2". The second one is faster. Look for "findComponent" on the Ajax4jsf and RichFaces forums. We discuss the algorithm already.