using a site to get information. geocoding. www

The point is, imagine - user uses google maps. He enters a string (adress) and that should be geocoded - just like here http://gmaps-samples.googlecode.com/svn/trunk/geocoder/singlegeocode.html when you enter an adress of any kind. i need to be able to get those numbers from inside an unity3 . but so far I can't, and the normal

var printGeoCode = "";
function GetGeoCode(){
    var url = "http://gmaps-samples.googlecode.com/svn/trunk/geocoder/singlegeocode.html";
    var www:WWW = new WWW(url);
    yield www;
    printGeoCode = www.text;
    print(printGeoCode);
}

just yields a page source (and I know I didn't even get to put the adress in here. any idea how to do it?

There are two references for this:

Unity Web Player and browser communication and
The Google Geocoding API