Foiled by JavaScript I suppose? Priority Vote

I'm trying httpunit because I am trying to login via script to a
website that I assume is running JavaScript as part of its
authentication method and I needed something to run the returned
JavaScript which CURL does not run.

I got an error:
org.mozilla.javascript.EcmaError: TypeError: Cannot find function
addEventListener. (httpunit#19)

Then noticed "addEventListener" is not listed here
http://httpunit.sourceforge.net/doc/javascript-support.html

Then I added HttpUnitOptions per
http://httpunit.sourceforge.net/doc/faq.html#unsupported
and saw many more errors with the first displaying as:
failed: org.mozilla.javascript.EcmaError: TypeError: Cannot find
function addEventListener. (httpunit#19)

Are the "httpunit#" 's known unsupported TODO features?
Are they listed anywhere? -- probably in the httpunit source.

On my first target page, I have many 19's, so I'd vote for that as a
priority, but I also have:
19
32
9
838
624
226
1

I suppose I am at a dead end regarding my script login task.

Can anyone recommend a different free offering that may be able to
login via "automation"?

But I was also considering Google V8 JavaScript Engine
http://code.google.com/p/v8/ "V8 is Google's open source JavaScript
engine."

The httpunit developers may want to consider using V8 for their
JavaScript support.  I may try V8 myself with either CURL or httpunit.
 I saw that getDOM method which I believe is the data V8 wants.

Regards,
Dee

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