How to focus cursor to field? Please help!

Hi,

I have the following piece of code for a Google Custom Search Engine, but I can't figure out how to automatically focus to the search box.

Any ideas, or if it's possible?

Cheers

<script src="http://www.google.com/jsapi" type="text/javascript"></script>
<script type="text/javascript"> 
  google.load('search', '1', {language : 'en'});
  google.setOnLoadCallback(function() {
    var customSearchControl = new google.search.CustomSearchControl('mysiteid');
    customSearchControl.setResultSetSize(google.search.Search.FILTERED_CSE_RESULTSET);
    var options = new google.search.DrawOptions();
    options.setAutoComplete(true);
    options.enableSearchboxOnly("http://www.mysite.com/");    
    customSearchControl.draw('cse-search-form', options);
  }, true);
</script>

Code (markup):

 

You can't and this is why:
This code probably displays the search form as a iframe and you can't access the document object inside the iframe from the document that holds the iframe

 

I thought that would be the case. Thanks for your help though!

 

Sorry but I don't understand... I guess what I'm after is this - if you look at the Google homepage the cursor's focussed on the search box automatically.