How can I tell if my page is set as the user's homepage?
<p>Is there any way I can detect when my page has been set as the user's homepage in their browser?</p>

<p>I'm most interested in something in javascript, but I'd be happy to hear about other approaches as well.</p>

<p><strong>Edit</strong>: I'm not looking for anything sneaky.  I'm wondering if there is anything that is explicitly allowed through the browsers to find out this information.</p>
