AJAX Zones with selects and validation

I'm missing something to make this all work correctly. JavaScript is 
definitely not my strong suit, and I haven't fully caught up with how to 
do things in 5.4.

I am doing the AJAX Select option from the Jumpstart.

http://jumpstart.doublenegative.com.au/jumpstart/examples/ajax/select1

First selection is country, with that then populating the list of 
institutions. An autocomplete would be better, but that comes slightly 
complicated with UTF characters and the different between the data 
source and what the user would use. So that isn't a simple option. 
However, this selection method is working fine.

However, I need to validate other items on the page, and I'm doing that 
in Java. So it goes back to Java with onValidateFromForm. I perform 
validation. If the validation fails, it kicks back to the page with the 
country selected. However, the choice of institution is lost, and even 
worse, the select list for institutions is blank. To recover one must 
choose a different country, then go back to their country. That of 
course isn't user friendly.

So I either need the institution select to have the right value after 
onValidateFromForm fails, or I need to pull off validation somehow. I 
see examples in Jumpstart, but I don't think those will work for what I 
need. I don't want to implement the validator in JS, as that makes it a 
lot more complicated. Right now my validating code is using Google's 
phone validator. There is a JS port, but I would rather not use both. 
Additionally, I think that the only way I have of making this easy is to 
read the country value, and if they don't get things right for 
US/Canada, is to insert a leading 1 country code so that the 
international validator from the library works.

This is all easier if I use an embedded Solr or something that can do 
the folding to take care of autocomplete, I just don't know if that is 
more work than the fix for the above.

Any ideas are appreciated and/or any pointers to the documentation that 
I appear to be unable to find.

Thanks

Richard


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