Arrrrrrrrrrrrrrgh! Problem solved:
http://www.webprodevelopment.com/BrightLight/archives/17-this.form.submit-is-not-a-function.-Really,-its-an-object!.html

        BTW: This issue was aggravated by the fact that I had
wicket:id="submit" and Wicket copied that value over to an attribute
"name" also equal to "submit".

        It would be nice if Wicket would be smart enough to avoid these kinds
of reserved words, especially in light of how confusing the error
message is :)

Gili

cowwoc wrote:
> Hi,
> 
>       If I have a form with a single DropDownChoice with a onSelectionChanged
> listener then it gets invoked fine when I change the selection. The
> moment I add a "Submit" button into the form alongside the
> DropDownChoice, then the event no longer gets fired when I change the
> selection. FireFox's JS engine fails with:
> 
> Error: document.getElementById("unassignUserForm").submit is not a function
> 
>       In other words, it is no longer legal to invoke form.submit() the
> moment a button is added into the form. Is this some sort of bug in
> FireFox or Wicket? Or is this some sort of "feature" of HTML and if so
> is there a workaround?
> 
> Environment: FireFox 2.0, Wicket 1.2.3
> 
> Thanks,
> Gili
> 

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