Set focus to a Silverlight control from javascript

I'm having a focus issue with Silverlight...

How can I set the focus to my Silverlight control using javascript?

Add the following to your Silverlight hosting page (just above the onSilverlightError function):

function appLoad(sender, args) {
    var xamlObject = document.getElementById('SilverlightObject');
    if (xamlObject != null)
        xamlObject.focus();
}

In the object declaration itself (e.g. in <object id='SilverlightObject') add this after <param name="onError" value="onSilverlightError" />:

    <param name="onLoad" value="appLoad" />

Also make sure the object names match (in this case 'SilverlightObject')