get a cookie value from document.open(ed adress)
<p>I want to use JavaScript's <code>document.open(url)</code> to open a website and run JavaScript on it to view a "specified cookie"</p>

<p>For example:</p>

<pre><code>var newone= document.open(mysite)

newone.onload = alert(document.cookie.specified_one)"
</code></pre>
