SelectOneRadio - IE vs FF

Question

I've seen some hints on this issue, but nothing definitive. Any suggestions?
It's got to be something I'm not grasping, but I did have a similar issue with
selectOneMenu using 1.1 that went away using 1.2.
Using IE6
When selecting one of three radio buttons, the valueChangeListener
does not fire. Selecting a second radio button, it does and performs what
is expected from selecting the first radio button.
Using FF2
All is well.
No message results, no exceptions. All conceivable variations; immediate,
renderResponse, etc. have no effect.
<h:selectOneRadio value="#{ecb.chartTypeSelected}"
valueChangeListener="#{ecb.onChartTypeChange}"
onchange="submit()">
  <f:selectItem itemLabel="c1" itemValue="c1" />
  <f:selectItem itemLabel="c2" itemValue="c2" />
  <f:selectItem itemLabel="c3" itemValue="c3" />
</h:selectOneRadio>
public void onChartTypeChange(ValueChangeEvent e) {
  resetTabButtons((String) e.getNewValue());
private String chartTypeSelected;
public String getChartTypeSelected() {
  return chartTypeSelected;
public void setChartTypeSelected(String chartTypeSelected) {
  this.chartTypeSelected = chartTypeSelected;
}

Answer 1

and the answer is...use onclick, not onchange.
guess my first time use of a radio button and the different browser results got me twisted up.