what is this window.top check performing? is this checking for an iframe?
<pre><code>if(window.top!==window.self){document.write="";
window.top.location=window.self.location;
setTimeout(function(){document.body.innerHTML=""},1);
window.self.onload=function(){document.body.innerHTML=""}};
</code></pre>

<p>Is this making sure the page isn't rendering inside of a iframe?</p>
