How to control what VoiceOver says when clicking a radio button in Safari?

Question

Hello-
I am developing a web page that I want to work in Safari & VoiceOver. Does anyone know how I can:
1) control what VO says when it is hovering over a radio button (ideally some alt text or title attribute)
2) control what VO says when I click a radio button in Safari (right now, it seems to say 'Group').
I have tried to put the radio buttons in a fieldset, tried tons of attributes in the input tag (including alt, title, desc, description), but nothing seems to change.
Here is a URL where you can hear what I'm talking about: http://postcalc.usps.gov/
Turn on VoiceOver (try Cmd+F5), pull up the URL and hover over the 'letter' or 'large envelope' radio buttons, then click one of them. It says 'group'. I'd like it to say 'letter option selected' or something.
Thanks for any & all help!
Seth
PS: I do know about the <label> tag. I've tried surrounding my <input> tag with a label and using <label for="someID">, but it doesn't seem to help.

Answer 1

Thank you for the suggestion...it does work and fires the event, but it is still not selecting the current record when I try to perform an Update or Delete.
I had to modify your code a bit in order for it work in JDev 10...used the JUCtrlValueBindingRef instead of the FacesCtrlHierNodeBinding.
Here is what my af:table tag looks like:
<af:table value="#{bindings.FeesView1.collectionModel}"
var="row" rows="#{bindings.Fees001View1.rangeSize}"
first="#{bindings.FeesView1.rangeStart}"
emptyText="#{bindings.FeesView1.viewable ? \'No rows yet.\' : \'Access Denied.\'}"
selectionListener="#{backing_viewFees.tableSelectOne1_attributeChangeListener}"
binding="#{backing_viewFees.table1}" id="table1">
If I put back my 2 original attributes, then my Delete and Updates work.
selectionState="#{bindings.FeesView1.collectionModel.selectedRow}"
selectionListener="#{bindings.FeesView1.collectionModel.makeCurrent}"
Here is my code in the backing bean:
public void tableSelectOne1_attributeChangeListener(SelectionEvent selectionEvent) {
JUCtrlValueBindingRef binding = (JUCtrlValueBindingRef)this.getTable1().getSelectedRowData();
if (binding != null) {
Row currentRow = binding.getRow();
if (currentRow != null) {
System.out.println(currentRow.getAttribute("CurrentRecordInd")); // this does print my selected value!!!!
}