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The interesting thing to note about the TV Tracker plugin is that uses Python for much of the work. The Apple engineers showed significant foresight by allowing the following:

<pre><code>
widget.system("/usr/bin/python main.py",null);
</code>

I’ve already found that this can help get around the restriction on XMLHttpRequest objects that prevents opening “external” URLs:

<pre><code>
            myXMLHTTPRequest = new XMLHttpRequest();
            myXMLHTTPRequest.onreadystatechange = processReqChange;

            widget.system(
                "/usr/bin/curl -o output.xml http://www.example.com/script.php");
            myXMLHTTPRequest.open("GET","output.xml",true);
            myXMLHTTPRequest.send(null);
            data = myXMLHTTPRequest.responseXML;
</code>