Calling Javascript functions

I can get the correct page for the translation of a word from English into Greek using http://translate.google.com/translate_t?sl=en&tl=el&q=Hello

But when I try to parse the response text from that link, using libxml (looking for '<div id=result_box ...'), it yells at me for innumerable parse errors.

I can also do this:

<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">

    google.load("language", "1");

    function initialize() {
      google.language.translate("Hello", "en", "el", function(result) {
        if (!result.error) {
          var container = document.getElementById("trans");
          container.innerHTML = result.translation;
        }
      });
    }
    google.setOnLoadCallback(initialize);

    </script>
  </head>

  <body>
    <div id="trans"></div>
  </body>
</html>

But that would have to be hosted somewhere for it to work, no?