PDF javascript submitForm/getURL POST

I'm trying to do a POST HTML request to a web server and display the results in the browser (ideally in a separate tab/window).

Basically, if the adobe reader is running inside a browser, then this works (although the contents are not displayed in a new window);

        var aSubmitFields = new Array('f1', 'f2');
        this.submitForm({
                cURL: 'http://someaddress/serversidestuff.pl',
                aFields: aSubmitFields,
                cSubmitAs: 'HTML',
                cCharset: 'utf-8'
                });

However, if the document is viewed inside a adobe reader without any web browser, then this doesn't

work. The number of fields I'd like to use is fairly large (total about 3-6K) making this unsuitable for GET.

Any recommendations on how to get this working?

Another approach that would work for me is basically generating a HTML document via javascript in the pdf doc, and

then opening this generated html with a browser (without any GET/POST) if this could be automated.

Somehow passing html content to the browser is my problem... Not sure if it is possible...